Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
hanh vai » hanh vi, hanh va, hanh tai
mai khoi » mai khoa, tai khoa, cac khoi
vai cua » dai cua, hai cua, lai cua
xuc ban » duc ban, cuc ban, quoc ban
xuc van » duc van, luc van, vuc van
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
mai hoi » dai hoi, lai hoi, mai doi
tu nang » tru nang, tu nong, tu nano
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 ((mai hoi) OR (mai khoi)). hieu vien cac ((xuc 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 ((mai hoi) OR (mai khoi)). hieu vien cac ((xuc 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 ((mai hoi) OR (mai khoi)). hieu vien cac ((xuc van) or (xuc ban)) hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang ((mai hoi) OR (mai khoi)). hieu vien cac ((xuc van) or (xuc ban)) hanh vai cua tu*.