Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
hieu van » hieu va, thien van, lieu va
sach ty » sach y, sach thu, xach tay
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
lam xuc » cam xuc, lam duoc
van lam » van nam
hoa hoi » khoa hoi, hoa hoc, hoa doi
sach tu » sach thu, cach tu, sach uu
cua tre » cua te, cuu tre, cua triet
ha hoi » ha noi, xa hoi, va hoi
xuc va » duc va, tuc va, luc va

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