Perhaps you should try some spelling variations:
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
hieu ve » hieu va, hieu van
cam loc » cam lo
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
ve cam » ve cham, ve cac, va cam
loc va » hoc va, luc va
tu san » thu san, tu ban, tu can

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

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