Perhaps you should try some spelling variations:
dung thuong » dung trong, hang thuong, cong thuong
manh trung » manh tung, thanh trung, manh hung
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trung ap » trung cap, trung lap, trung tam
dan toan » van toan, dan than, manh toan
ap dung » xay dung, van dung
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - manh trung ap dung thuong ((dan toan) or (van tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - manh trung ap dung thuong ((dan toan) OR (van tan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - manh trung ap dung thuong ((dan toan) or (van tan)) cau*.