Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
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 » su dung, qua song, qua cong

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((nong san) OR (cong dan)) ((qua dung) OR (quang dung)) trong ban thanh lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((nong san) or (cong dan)) ((qua dung) OR (quang dung)) trong ban thanh lap~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((nong san) or (cong dan)) ((qua dung) OR (quang dung)) trong ban thanh lap*.