Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
van dang » van dong, van dung, van nang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban
va dang » va nang, va lang, da dang

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) or (thien anh)) - hanh trang ((va dang) OR (van dang)) cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - hanh trang ((va dang) OR (van dang)) cong san toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - hanh trang ((va dang) OR (van dang)) cong san toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - hanh trang ((va dang) OR (van dang)) cong san toan tap*.