Perhaps you should try some spelling variations:
thiet tach » chiet tach, thuat tach
thien hach » thien thanh, hien hanh
thanh tran » thanh trang, thanh toan, thanh tra
trong van » trong cac
tran van » luan van
van dung » van dong, xay dung, tin dung
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet tach) or (thien hach)) - thanh tran van dung trong van ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet tach) OR (thien hach)) - thanh tran van dung trong van ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet tach) or (thien hach)) - thanh tran van dung trong van ((toan cau) OR (toan tap))*".