Perhaps you should try some spelling variations:
cuu tre » cau tren, cau treo
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cua triet, dua tren
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ky lang » ky nang, ky dang, ky tang
tu ban » thu ban, te ban
soc va » hoc va, loc va, doc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
tu san » thu san, tu can, vu san

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) OR (tu ban)) ky lang xa hoi. hieu ve cham soc va dan vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky lang xa hoi. hieu ve cham soc va dan vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (tu ban)) ky lang xa hoi. hieu ve cham soc va dan vi ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (tu ban)) ky lang xa hoi. hieu ve cham soc va dan vi ((cua tre) or (cuu tre))*.