Perhaps you should try some spelling variations:
danh van » doanh van, dinh van, anh van
hieu van » hieu va, thien van, lieu va
nam duoc » nam thuoc, da duoc, dat duoc
dang van » hoang van, hang va
te sach » toc sach
cua tre » cua te, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
duoc ma » duoc lam
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky tang xa hoi. hieu van nam duoc ma ((danh van) or (dang van)) ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang xa hoi. hieu van nam duoc ma ((danh van) OR (dang van)) ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang xa hoi. hieu van nam duoc ma ((danh van) or (dang van)) ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang xa hoi. hieu van nam duoc ma ((danh van) or (dang van)) ((cua tre) OR (cuu tre))*.