Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
cua tre » cua te, cuu tre, cua triet
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cam luc » cam xuc, cau luc
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
san ky » sang ky, van ky, dan ky
luc va » duc va, tuc va, loc 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 tang xa hoi. ((hieu van) OR (lieu va)) cam luc va ((hanh di) or (hang di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang xa hoi. ((hieu van) OR (lieu va)) cam luc va ((hanh di) OR (hang di)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky tang xa hoi. ((hieu van) OR (lieu va)) cam luc va ((hanh di) or (hang di)) cua tre*".