Perhaps you should try some spelling variations:
thiet tach » chiet tach, thuat tach
thien hach » thien thanh, hien hanh
canh thanh » canh tranh, danh thanh, anh thanh
thanh qua » thanh quan, thanh qui, hanh qua
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong tac » cong ty

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)) - canh thanh qua dung cong tac ((toan ban) OR (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet tach) OR (thien hach)) - canh thanh qua dung cong tac ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet tach) or (thien hach)) - canh thanh qua dung cong tac ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet tach) or (thien hach)) - canh thanh qua dung cong tac ((toan ban) OR (van ban))*.