Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien anh » thien danh, tien anh, thien thanh
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tam dung » tam duong, tan dung, am dung
tac dung » sach dung, xay dung, tin dung
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 ((thien anh) or (tieng anh)) - thanh trung ((tam dung) OR (tac dung)) cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (tieng anh)) - thanh trung ((tam dung) OR (tac dung)) cong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien anh) or (tieng anh)) - thanh trung ((tam dung) OR (tac dung)) cong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (tieng anh)) - thanh trung ((tam dung) OR (tac dung)) cong manh toan cau*.