Perhaps you should try some spelling variations:
nam duoc » nam thuoc, da duoc, dat duoc
danh vai » danh sai, doanh van, dang van
hieu van » hieu va, thien van, lieu va
lam duoc » luat duoc, lam thuoc, tao duoc
te sach » toc sach
danh va » doanh va, hanh va, anh va
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang

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