Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh vai » danh sai, danh va, doanh van
hieu van » hieu va, thien van, lieu va
vai cuu » vai cua
va danh » va dinh, va dan, va hanh
lam xuc » cam xuc, lam duoc
van lam » van nam
cuu tre » cua tre, cau tren, cau treo
sy long » sy luong, quy long
xuc va » duc va, tuc va, luc va
y long » _ long, o long, ly luong
ha hoi » hoa hoi, ha noi, xa hoi

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