Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, bien tinh
hanh hang » thanh hang, hanh han, hanh mang
hang hang » nang hang, cang thang, hung thang
phan cong » thanh cong
cua phan » cua nhan, cua phap, cua han
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: theo ((lieu tinh) or (diep tinh)) - ((hanh hang) or (hang hang)) cua phan cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (diep tinh)) - ((hanh hang) OR (hang hang)) cua phan cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) or (diep tinh)) - ((hanh hang) or (hang hang)) cua phan cong dan toan cao*.