Perhaps you should try some spelling variations:
thanh tung » thanh cong
nganh toan » nganh thanh, thanh toan, manh toan
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
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: ((ho chieu) or (hoc thieu)) xanh - thanh tung ((tam dung) or (tac dung)) trong nganh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - thanh tung ((tam dung) OR (tac dung)) trong nganh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - thanh tung ((tam dung) or (tac dung)) trong nganh toan cau*.