Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
va doanh » van doanh, vay doanh, va danh
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
ban cua » ban quan
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cac xuc » cac nuoc, chat xuc, cac cuoc
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

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 hang ((ma hoi) or (xa hoi)). hieu ve ((cac xuc) OR (cam xuc)) va doanh ban cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang ((ma hoi) OR (xa hoi)). hieu ve ((cac xuc) OR (cam xuc)) va doanh ban cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty hang ((ma hoi) or (xa hoi)). hieu ve ((cac xuc) OR (cam xuc)) va doanh ban cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ty hang ((ma hoi) or (xa hoi)). hieu ve ((cac xuc) OR (cam xuc)) va doanh ban cua te*.