Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
xuc ban » duc ban, cuc ban, quoc ban
tu nang » tru nang, tu nong, tu nano
cao hoi » co hoi, cao hoc, tao hoi
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach ty
luc van » luoc van, luu van, duc van
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

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 tu nang ((cao hoi) OR (cau hoi)). hieu ve cac ((luc van) or (xuc ban)) hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang ((cao hoi) OR (cau hoi)). hieu ve cac ((luc van) OR (xuc ban)) hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang ((cao hoi) OR (cau hoi)). hieu ve cac ((luc van) or (xuc ban)) hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang ((cao hoi) OR (cau hoi)). hieu ve cac ((luc van) or (xuc ban)) hanh vai cua tu*.