Perhaps you should try some spelling variations:
tang cho » trang cho, sang cho, hang cho
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hanh tu » anh tu, danh tu
hanh vu » hanh vi, hanh va, hanh ve
vuc van » duc van, luc van, thuc van
cac vuc » cac nuoc, cac vung, cac cuoc
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
ty tang » tay tang, ty xang, ty hang
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
anh vu » anh tu, anh va, anh ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty tang cho hoc. hieu ve cac vuc van ((anh vu) or (((hanh vu) OR (hanh tu)))) cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty tang cho hoc. hieu ve cac vuc van ((anh vu) OR (((hanh vu) OR (hanh tu)))) cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty tang cho hoc. hieu ve cac vuc van ((anh vu) or (((hanh vu) OR (hanh tu)))) cua cau*".