Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
cuu tre » cua tre, cau tren, cau treo
va hang » van hang, va nang, va lang
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
sai ky » sac ky
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky ((lang xa) or (dang xay)) hoi. hieu va cam tuc va hang va ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((lang xa) OR (dang xay)) hoi. hieu va cam tuc va hang va ((cuu tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((lang xa) or (dang xay)) hoi. hieu va cam tuc va hang va ((cuu tre) or (cua triet))*.