Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh oai
thanh tai » thanh hai, thanh toan, doanh tai
nang dai » nang dau, nang tai, lang dai
hieu van » hieu va, thien van, lieu va
van lam » van nam
lam tuc » lam thuoc, lam truoc, luat tuc
dai hoi » dai hoc, dai hai, dai moi
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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 y) or (sac ky)) nang dai hoi. hieu van lam tuc xa ((thanh vai) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sac ky)) nang dai hoi. hieu van lam tuc xa ((thanh vai) OR (thanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sac ky)) nang dai hoi. hieu van lam tuc xa ((thanh vai) or (thanh tai)) cua tre*.