Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
van hanh » van thanh, ban hanh, van anh
va doanh » van doanh, vay doanh, va danh
te sach » toc sach
van cuu » van cau, van chu, van cu
truc va » thuc va, thuc vat, trung va
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
van ha » van hoa, van chat, van phan

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 ((nang xa) or (lang xa)) hoi. hieu ((van ha) OR (van hanh)) truc va doanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (lang xa)) hoi. hieu ((van ha) OR (van hanh)) truc va doanh van cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (lang xa)) hoi. hieu ((van ha) OR (van hanh)) truc va doanh van cuu tre*".