Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
thu lang » thu bang, phu lang, tho lang
thu hang » thi hang, thuc hanh, thu huong
ly doanh » ly anh
te sach » toc sach
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
qua da » qua ca, qua di, qua va
xuc ly » xu ly

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 ((thu lang) or (thu hang)) van hoa. hieu qua da xuc ly doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu lang) OR (thu hang)) van hoa. hieu qua da xuc ly doanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((thu lang) or (thu hang)) van hoa. hieu qua da xuc ly doanh van cua tre*.