Perhaps you should try some spelling variations:
thanh vai » thanh van, thanh tai, thanh oai
thanh hai » thanh phan, thanh hoa, thanh san
hieu van » hieu va, thien van, lieu va
nang ma » tang ma, sang ma, nang cao
van lam » van nam
lam luc » lao luc, lam duoc
cua tre » cua te, cuu tre, cua triet
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky nang ma hoi. hieu van lam luc va ((thanh vai) or (thanh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky nang ma hoi. hieu van lam luc va ((thanh vai) OR (thanh hai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su xac ky nang ma hoi. hieu van lam luc va ((thanh vai) or (thanh hai)) cua tre*.