Perhaps you should try some spelling variations:
luong cong » dung cong, trong cong, cong cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua luong » cu luong, cua huong, chat luong
tinh cua » trinh cua, sinh cua, tinh chat
dan than » dan chan, ban than, van than
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh tinh cua luong cong ((dan than) or (((van toan) OR (van tuan)))) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tinh cua luong cong ((dan than) OR (((van toan) OR (van tuan)))) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tinh cua luong cong ((dan than) or (((van toan) OR (van tuan)))) cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tinh cua luong cong ((dan than) or (((van toan) OR (van tuan)))) cao*.