Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dung cong » dung trong
luan phan » luan van, luan hoan
ho chieu » hoc thieu, doi chieu, mot chieu
cua dung » cua dang, cua dong, qua dung
van phan » van phong, van thanh, van ban

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: ((ho chieu) OR (theo chieu)) xanh - hanh tranh cua dung cong ((van phan) OR (luan phan)) cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - hanh tranh cua dung cong ((van phan) OR (luan phan)) cac~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - hanh tranh cua dung cong ((van phan) OR (luan phan)) cac*.