Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
chan dau » phan dau, han dau, chuan dao
doanh » toanh, soanh, hoanh
doan » toan, soan, hoan

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