Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hoc viet » hoc hien
van hanh » van thanh, ban hanh, van anh
nang lai » nang tai, mang lai, nang cai
lai hoi » dai hoi, lai hoa, lai roi
sach ty » sach tu, sach thu, xach tay
cac xuc » cac nuoc, chat xuc, cac cuoc
hanh va » hang va, hanh vi
va hoc » van hoc

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

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