Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thich anh » thi hanh, hinh anh
thanh cao » thanh ca, thanh thao, thanh cham
thanh cac » hanh cac, thanh bac, thanh ca
tranh ve » trinh ve, thanh ve, tranh va
ve nhung » va nhung, tu nhung

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

• Performing a fuzzy search may retrieve terms with similar spellings: do ((thi thanh) or (thich anh)) - canh tranh ve nhung cong thanh ((thanh cao) OR (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: do ((thi thanh) OR (thich anh)) - canh tranh ve nhung cong thanh ((thanh cao) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "do ((thi thanh) or (thich anh)) - canh tranh ve nhung cong thanh ((thanh cao) OR (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: do ((thi thanh) or (thich anh)) - canh tranh ve nhung cong thanh ((thanh cao) OR (thanh cac))*.