Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chieu xanh » chieu sach, chieu sang, chieu tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cach ban » cac ban, cach bao, cach ben
phan cau » phan dau, phan cac, phan lap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - cach ban cua ((nhung cong) or (dung cong)) toan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - cach ban cua ((nhung cong) OR (dung cong)) toan ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - cach ban cua ((nhung cong) or (dung cong)) toan ((phan cau) or (phan tu))*.