Perhaps you should try some spelling variations:
thanh hang » thanh hoang, thanh thang, tranh hang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban
theo ho » theo hop, theo bo, tho ho
hang ca » hang va, nang cao, hang tai
ca tong » ca trong, cap tong, cua tong

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ho manh - thanh hang ca tong ((cong dan) OR (cong san)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ho manh - thanh hang ca tong ((cong dan) OR (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ho manh - thanh hang ca tong ((cong dan) OR (cong san)) toan ban*.