Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
nang tai » hang tai, tang tai, sang tai
tai hoi » tai khoi, dai hoi, tai hai
sach ty » sach tu, sach thu, xach tay
cac xuc » cac nuoc, chat xuc, cac cuoc
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) or (sach y)) nang tai hoi. hieu hien ((cac xuc) or (cam xuc)) van hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) nang tai hoi. hieu hien ((cac xuc) OR (cam xuc)) van hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) nang tai hoi. hieu hien ((cac xuc) or (cam xuc)) van hanh vai cua viet*.