Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thieu » hoc hien
trang cua » tranh cua, tang cua, trung cua
cong nong » cong dong, cong trong, cong luong
cong cong » cong dong, trong cong, dung cong
san tran » tan tran, ban tran, dang tran
tran van » luan van

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 thieu) OR (toc thieu)) xanh - hanh trang cua ((cong nong) OR (cong cong)) san tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) xanh - hanh trang cua ((cong nong) OR (cong cong)) san tran van~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - hanh trang cua ((cong nong) OR (cong cong)) san tran van*.