Perhaps you should try some spelling variations:
tang thanh » dang thanh, trung thanh, hoang thanh
hieu quan » lieu quan, thien quan, lien quan
thanh hoi » thanh hoai, thanh hoa, thanh hai
chuc theo » thuoc theo, cau theo, chuc thi
suc tang » tuc tang, duc tang, duc thang
cao suc » cao su, cao duc
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky nang x hoi. ((hieu quan) or (hieu qua)) cao suc tang thanh hoi chuc theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang x hoi. ((hieu quan) OR (hieu qua)) cao suc tang thanh hoi chuc theo.
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang x hoi. ((hieu quan) or (hieu qua)) cao suc tang thanh hoi chuc theo*.