Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 - canh ((tranh cua) or (manh cua)) nhung cong dan ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh ((tranh cua) OR (manh cua)) nhung cong dan ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh ((tranh cua) or (manh cua)) nhung cong dan ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh ((tranh cua) or (manh cua)) nhung cong dan ((phan cau) OR (phan dau))*.