Perhaps you should try some spelling variations:
danh vai » danh sai, doanh van, dang van
hieu van » hieu va, thien van, lieu va
danh va » doanh va, hanh va, anh va
lam xuc » cam xuc, lam duoc
sach ky » sach y, sach ty, sach kem
van lam » van nam
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ky) OR (sac ky)) lang ha hoi. hieu van lam xuc va ((danh vai) or (danh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sac ky)) lang ha hoi. hieu van lam xuc va ((danh vai) OR (danh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ky) OR (sac ky)) lang ha hoi. hieu van lam xuc va ((danh vai) or (danh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) OR (sac ky)) lang ha hoi. hieu van lam xuc va ((danh vai) or (danh va)) cua tre*.