Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
trong ban » trong san, trong tan, trong quan
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai
nong san » cong san, dong san, nong dan
cong dan » cong san, cong tan, huong dan
qua dung » quang dung, su dung, qua song

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 - ((nong san) or (cong dan)) qua dung trong ban thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((nong san) OR (cong dan)) qua dung trong ban thanh lap.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((nong san) or (cong dan)) qua dung trong ban thanh lap*.