Perhaps you should try some spelling variations:
dong thanh » truong thanh
hanh trang » thanh trung, canh tranh, hanh trinh
thong minh » thong tin, hoang minh
hien xanh » hien hanh, hien nhanh, chieu xanh
trang va » tran van, hang va
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh trang va dung ((dong thanh) or (thong minh)) ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trang va dung ((dong thanh) OR (thong minh)) ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trang va dung ((dong thanh) or (thong minh)) ((toan cau) OR (toan tap))*".