Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
nang va » nang van, hang va, nang ma
cua tre » cua te, cuu tre, dua tren
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
cam tu » cam thu, nam tu, dam tu
tu cam » tu cham, tu cac, tu nam

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 tang xa hoi. hieu va cam tu cam nang va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang xa hoi. hieu va cam tu cam nang va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang xa hoi. hieu va cam tu cam nang va ((cua tre) or (cua triet))*.