Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tang luan » dung luan
dung cong » dung trong
thanh ban » thanh san, thanh van, thanh bac
mang cua » manh cua, dung cua, ban cua
cong dan » cong san, cong tan, huong dan
than man » than ma, thanh san, tran manh

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 - anh ((mang cua) or (tang luan)) dung cong dan ((than man) or (thanh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - anh ((mang cua) OR (tang luan)) dung cong dan ((than man) OR (thanh ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - anh ((mang cua) or (tang luan)) dung cong dan ((than man) or (thanh ban))*.