Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung vap » trung cap, trung va, trung van
dung cong » dung trong
van trang » vang trang, van thang, va trang
cho thue » choi thuc, cuc thue, cho he
doc hieu » toc thieu, hoc thieu, hoc hien
vap dung » van dung, ap dung, va dung
van tang » van thang, van nang, van tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cho thue) or (doc hieu)) xanh - thanh trung vap dung cong ((van tang) OR (van trang)) ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cho thue) OR (doc hieu)) xanh - thanh trung vap dung cong ((van tang) OR (van trang)) ca.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cho thue) or (doc hieu)) xanh - thanh trung vap dung cong ((van tang) OR (van trang)) ca".
• Adding a wildcard symbol may retrieve word variants: ((cho thue) or (doc hieu)) xanh - thanh trung vap dung cong ((van tang) OR (van trang)) ca*.