Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
thanh tu » hanh tu, nhanh tu, thanh tung
than tu » thang tu, phan tu, tran tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (chieu xanh)) - canh tranh va nhung cong dan ((than tu) or (thanh tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - canh tranh va nhung cong dan ((than tu) OR (thanh tu)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - canh tranh va nhung cong dan ((than tu) or (thanh tu))*.