Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
hoc thiet » hoc thieu, hoc hien, hoc viet
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
va dung » van dung, va duong, vat dung
tan van » tran van, tang van, luan van
van cau » van dau, van hau, van chat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((hoc thiet) OR (toc thieu))) or (hoc thuyet)) anh - canh tranh va dung cong tan van cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc thiet) OR (toc thieu))) OR (hoc thuyet)) anh - canh tranh va dung cong tan van cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((hoc thiet) OR (toc thieu))) or (hoc thuyet)) anh - canh tranh va dung cong tan van cau".
• Adding a wildcard symbol may retrieve word variants: ((((hoc thiet) OR (toc thieu))) or (hoc thuyet)) anh - canh tranh va dung cong tan van cau*.