Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
anh tang » anh bang, anh dang, anh nang
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - anh tang va ((nhung cong) or (dung cong)) ban ((than cao) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - anh tang va ((nhung cong) OR (dung cong)) ban ((than cao) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - anh tang va ((nhung cong) or (dung cong)) ban ((than cao) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - anh tang va ((nhung cong) or (dung cong)) ban ((than cao) OR (toan cao))*.