Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trung hoc » trung quoc
trung ha » trung tam, trung cap
cong tap » cuong tap, cong tac, cong tan
tap doan » tap quan
doan ban » doanh ban, toan ban, doan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((lieu tinh) or (cuu tinh)) - thanh ((trung ha) OR (trung hoc)) nhung cong tap doan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu tinh) OR (cuu tinh)) - thanh ((trung ha) OR (trung hoc)) nhung cong tap doan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((lieu tinh) or (cuu tinh)) - thanh ((trung ha) OR (trung hoc)) nhung cong tap doan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((lieu tinh) or (cuu tinh)) - thanh ((trung ha) OR (trung hoc)) nhung cong tap doan ban*.