Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
dung cua » dung luan, dung cho
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc thieu)) tinh - thanh dung cua ((hang cong) or (bang cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) tinh - thanh dung cua ((hang cong) OR (bang cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) tinh - thanh dung cua ((hang cong) or (bang cong)) dan toan cao*.