Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
sach thi » sach thu, sach tai, sach thieu
thi cong » tai cong, thien cong
cong cho » dong cho, cong co, rong cho
viec cac » vien cac, viec cua, viec lam
cac dung » cach dung, cac duong, tac dung
dung van » duong van, dung va, dang van
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
cho hoc » co hoc, khoa hoc
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 thi cong cho hoc. hieu viec cac dung van hanh ((vi cua) or (di cua)) chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi cong cho hoc. hieu viec cac dung van hanh ((vi cua) OR (di cua)) chu*.