Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thuc xanh » thuc hanh, thuc thanh, thuc dan
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
hoang van » hang va
hoc thuc » hoc huu
cua dung » cua dang, cua dong, qua dung
tang van » dang van, trong van, tang luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuc xanh - hanh trinh cua dung cong ((tang van) OR (hoang van)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thuc xanh - hanh trinh cua dung cong ((tang van) OR (hoang van)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc thuc xanh - hanh trinh cua dung cong ((tang van) OR (hoang van)) ban*.