Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
chao chu » cho chu, cua chu, cao cho
cong tap » cuong tap, cong tac, cong tan
tap doan » tap quan
doan cao » doanh cao, toan cao, doan 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 tieu) or (chao chu)) xanh - hanh ((trinh vat) or (trinh van)) nhung cong tap doan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (chao chu)) xanh - hanh ((trinh vat) OR (trinh van)) nhung cong tap doan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (chao chu)) xanh - hanh ((trinh vat) or (trinh van)) nhung cong tap doan cao*.