Perhaps you should try some spelling variations:
doanh tang » doanh sang, doanh tong, doanh thanh
cua triet » cua viet, su triet, va triet
van doanh » toan doanh, van dong, van thanh
hieu van » hieu va, thien van, lieu va
tang cua » mang cua, hang cua, tang luan
toc sach » hoc sach, doc sach, thuoc sach
cac tuc » cac toc, cac tac, cac nuoc
cac tu » cac thu, cach tu, cac du
x hoi » xa hoi, o hoi, x ho

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)) ky nang x hoi. hieu van ((cac tuc) or (cac tu)) van doanh tang cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang x hoi. hieu van ((cac tuc) OR (cac tu)) van doanh tang cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky nang x hoi. hieu van ((cac tuc) or (cac tu)) van doanh tang cua triet*".