Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cua thong » cua thuong, cua khong, cua tong
hanh han » hanh nhan, hanh phan, hanh san
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
toan ban » van ban

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