Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
tang dan » tang van, tung dan, tang luan
hanh lai » hanh lam, hanh tai, thanh loi
ky tang » ky nang, ky dang, kho tang
dan hoi » dan hoc, dai hoi, van hoi
hieu va » lieu va
cao tuc » dao tuc, cao duc, cao suc
tu sac » tu sach, tu cac, tu san
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai ky
cua te » cua tu

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: tu sac ky tang dan hoi. ((hieu va) OR (hieu qua)) cao tuc va ((hanh lai) OR (thanh lap)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang dan hoi. ((hieu va) OR (hieu qua)) cao tuc va ((hanh lai) or (thanh lap)) cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang dan hoi. ((hieu va) OR (hieu qua)) cao tuc va ((hanh lai) or (thanh lap)) cua te*.