Perhaps you should try some spelling variations:
thanh truong » thanh thuong, thanh tung, thanh huong
thanh trung » thanh tung
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
tac toan » tap toan, tam toan, hach toan
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: theo chu xanh - ((thanh truong) OR (thanh trung)) va ((hang cong) or (bang cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((thanh truong) OR (thanh trung)) va ((hang cong) OR (bang cong)) tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - ((thanh truong) OR (thanh trung)) va ((hang cong) or (bang cong)) tac toan tap".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((thanh truong) OR (thanh trung)) va ((hang cong) or (bang cong)) tac toan tap*.