Perhaps you should try some spelling variations:
hanh hang » thanh hang, hanh han, hanh mang
hang hang » nang hang, cang thang, hung thang
cua trong » cua truong, cua trung, qua trong
chu xanh » chu manh, chieu xanh, chua xang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
chuc » thuc, chua, phuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (chuc nang)) - ((hanh hang) OR (hang hang)) cua trong cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chuc nang)) - ((hanh hang) OR (hang hang)) cua trong cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chuc nang)) - ((hanh hang) OR (hang hang)) cua trong cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chuc nang)) - ((hanh hang) OR (hang hang)) cua trong cong san toan ban*.