Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
thanh vai » thanh hai, thanh van, thanh oai
hieu van » hieu va, thien van, lieu va
sang tai » hang tai, sang tao, tang tai
lam duc » lam duoc, pham duc, nam duoc
van lam » van nam
tai hoi » tai khoi, dai hoi, tai hai
cua tre » cua te, cuu tre, cua triet
san ky » sang ky, van ky, ban ky
dan ky » van ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: phu ((san ky) OR (dan ky)) sang tai hoi. hieu van lam duc va ((thanh vai) OR (thanh tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "phu ((san ky) or (dan ky)) sang tai hoi. hieu van lam duc va ((thanh vai) OR (thanh tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: phu ((san ky) or (dan ky)) sang tai hoi. hieu van lam duc va ((thanh vai) OR (thanh tai)) cua tre*.