Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh than » trinh thanh, trinh han, trinh toan
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
tang vat » tang van, dang vat, bang vat
trang va » tran van, hang va
than cao » toan cao, thai cao, than cap

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 vat) or (trang va)) nhung cong trinh than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - anh ((tang vat) OR (trang va)) nhung cong trinh than cao*.