Perhaps you should try some spelling variations:
truyen tai » truyen dai, truyen bai, truyen tam
tai toan » bai toan, tap toan, tai tuan
toan chi » toan cao, tai chi, luan chi
ban vem » ban kem, ban viet
te cong » tai cong, thi cong, thu cong
ban ve » ban va
ky te » y te, ky le, ly te
dong » dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: truyen tai toan chi đe co ((ban ve) or (ban vem)) ky te cong dong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: truyen tai toan chi đe co ((ban ve) OR (ban vem)) ky te cong dong.
• Adding a wildcard symbol may retrieve word variants: truyen tai toan chi đe co ((ban ve) or (ban vem)) ky te cong dong*.