Perhaps you should try some spelling variations:
xa thanh » va thanh, ta thanh, gia thanh
ha thanh » va thanh, pham thanh, phan thanh
hieu van » hieu va, thien van, lieu va
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
cuu tre » cua tre, cau tren, cau treo
nam tuc » nam thuc, nam truc, nam tu
tu san » thu san, tu ban, tu can
ma hoi » mai hoi, xa hoi, ma hoa
san ky » sang ky, van ky, dan ky
cua te » cua tu

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 ma hoi. hieu van nam tuc ((xa thanh) OR (ha thanh)) vai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang ma hoi. hieu van nam tuc ((xa thanh) OR (ha thanh)) vai ((cuu tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky tang ma hoi. hieu van nam tuc ((xa thanh) OR (ha thanh)) vai ((cuu tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu san ky tang ma hoi. hieu van nam tuc ((xa thanh) OR (ha thanh)) vai ((cuu tre) or (cua te))*.