Perhaps you should try some spelling variations:
hanh vinh » thanh vinh, khanh vinh, hanh tinh
kho tang » cao tang
hieu van » hieu va, thien van, hieu ve
van hanh » van thanh, ban hanh, van anh
san kho » san khoa, san cho, lan kho
tang xa » trang xa, tang ma, lang xa
cao duc » dao duc, cao suc, giao duc
duc van » duc va, duc tan, duc manh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
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 kho tang xa hoi. ((hieu van) or (lieu va)) cao duc van hanh vinh ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san kho tang xa hoi. ((hieu van) OR (lieu va)) cao duc van hanh vinh ((cuu tre) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san kho tang xa hoi. ((hieu van) or (lieu va)) cao duc van hanh vinh ((cuu tre) OR (cua tre))*".