Std transfer thru .. ?

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if a girl gives me a blowjob, std able to transmit from her to me ?

Some can certainly be transmitted that way. For example, if she has a cold sore that is shedding, you could get a genital herpes infection (probably of a milder form, but not necessarily). For most other STDs the chances are low but not zero.

about anal sex, the search result i get is penetration will tear down the tissue inside ,therefore allowing bacteria easily infected the area, right ?

Change the word "will" to "can" and I think you have a true statement.