Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
la tren » loai tren, dua tren, dat tren
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc va » thuc va, truc va, tuc xa
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ve la » de la, ve li, ve va

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 ((lang xa) or (nang x)) hoi. ((hieu ve) or (hieu va)) cam tuc va thanh ve la tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((lang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu va)) cam tuc va thanh ve la tren.
• Adding a wildcard symbol may retrieve word variants: tu san ky ((lang xa) or (nang x)) hoi. ((hieu ve) or (hieu va)) cam tuc va thanh ve la tren*.