Perhaps you should try some spelling variations:
thanh luong » thanh huong, thanh long, thanh cuong
quan dang » quang dang, quan lang, quan dong
dang cong » dung cong
cong tinh » cong trinh, cong vinh, long tinh
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
toan cau » 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: ((ho trieu) OR (30 trieu)) tinh - ((thanh luong) or (thanh cong)) quan dang cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - ((thanh luong) OR (thanh cong)) quan dang cong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - ((thanh luong) or (thanh cong)) quan dang cong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (30 trieu)) tinh - ((thanh luong) or (thanh cong)) quan dang cong tinh toan cau*.