Perhaps you should try some spelling variations:
thanh tay » thanh tai, thanh toan, thanh thuy
thanh tap » thanh lap, thanh tai, thanh tam
cua tre » cua te, cuu tre, cua triet
ky sang » ky nang, ky dang, ky tang
sang xa » song xa, lang xa, sang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
tu sac » tu sach, tu cac, tu san
luc va » duc va, tuc va, loc va
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 sac ky sang xa hoi. ((hieu ve) or (hieu va)) cam luc va ((thanh tap) or (thanh tay)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang xa hoi. ((hieu ve) OR (hieu va)) cam luc va ((thanh tap) OR (thanh tay)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang xa hoi. ((hieu ve) or (hieu va)) cam luc va ((thanh tap) or (thanh tay)) cua tre*.