Perhaps you should try some spelling variations:
lanh tranh » canh tranh, lan tranh, hanh trinh
lanh manh » lan anh, van manh, anh anh
ho chieu » theo chieu, hoc thieu, doi chieu
ban cong » bang cong, van cong, phan cong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chi)) xanh - ((lanh manh) OR (lanh tranh)) cua ban cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chi)) xanh - ((lanh manh) OR (lanh tranh)) cua ban cong san toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chi)) xanh - ((lanh manh) OR (lanh tranh)) cua ban cong san toan ban*".