Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
thiet tach » chiet tach, thuat tach
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
truong va » truong dai, truong cao, truong dao
ban thanh » ban hanh, ban hang
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((thiet tach) OR (thien hach)) - hanh truong va nhung cong ((van toan) or (ban thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((thiet tach) OR (thien hach)) - hanh truong va nhung cong ((van toan) OR (ban thanh)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((thiet tach) OR (thien hach)) - hanh truong va nhung cong ((van toan) or (ban thanh)) cao*".