Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu
trung vap » trung cap, trung va, trung van
dung cong » dung trong
ban hangh » ban hanh, ban thanh, van hanh
vap dung » van dung, ap dung, va dung
ban hang » ngan hang

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) or (hoc hien)) sach - thanh trung vap dung cong ((ban hang) or (ban hangh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) sach - thanh trung vap dung cong ((ban hang) OR (ban hangh)) cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) sach - thanh trung vap dung cong ((ban hang) or (ban hangh)) cau*.