Perhaps you should try some spelling variations:
ban hang » ngan hang
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
vai cuu » vai cua
cuu tre » cua 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 ((tu nang) or (truc nano)) x ho. hieu va cac tuc ((va thanh) or (ban hang)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (truc nano)) x ho. hieu va cac tuc ((va thanh) OR (ban hang)) vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (truc nano)) x ho. hieu va cac tuc ((va thanh) or (ban hang)) vai cuu tre*.