Perhaps you should try some spelling variations:
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
cam duc » cam xuc, cao duc, pham duc
han tri » han tai, thanh tri, chan troi
van tri » van tai, van thi, van toi
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
tu san » thu san, tu ban, tu can
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) or (tu san)) ky tang xa hoi. lieu va cam duc va ((han tri) OR (van tri)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (tu san)) ky tang xa hoi. lieu va cam duc va ((han tri) OR (van tri)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) or (tu san)) ky tang xa hoi. lieu va cam duc va ((han tri) OR (van tri)) cua tre*".