Perhaps you should try some spelling variations:
hanh trong » hanh trang, anh trong, hinh trong
quang dung » quang trung, ung dung, cuong dung
hien xanh » hien hanh, hien nhanh, chieu xanh
trong san » trong cac, cong san, dong san
qua dung » qua song, qua cong, duc dung
san van » tan van, luan van, tran van

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