Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
thien thanh » tien thanh, thi thanh, hien hanh
thieu hanh » thien chanh, thieu khang, thi hanh
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
cua dung » cua dang, cua dong, qua dung
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 ((thieu hanh) or (thien thanh)) - ((thanh truong) or (thanh cong)) cua dung cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu hanh) OR (thien thanh)) - ((thanh truong) OR (thanh cong)) cua dung cong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu hanh) or (thien thanh)) - ((thanh truong) or (thanh cong)) cua dung cong manh toan cao*.