Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cong dan » cong tan, cong dong, cong tac
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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

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