Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
thiet tach » chiet tach, thien hach
thuat tach » thuat sach, thuat mach, thuat tac
nhung cong » dung cong, thong cong, nhung don
truong va » truong dai, truong cao, truong dao
hang cong » dang cong, hang nong, bang cong
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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 (thuat tach)) - thanh truong va ((nhung cong) or (hang cong)) tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet tach) OR (thuat tach)) - thanh truong va ((nhung cong) OR (hang cong)) tan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet tach) OR (thuat tach)) - thanh truong va ((nhung cong) or (hang cong)) tan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet tach) OR (thuat tach)) - thanh truong va ((nhung cong) or (hang cong)) tan than cau*.