Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
dung huong » dung thuong, dung phuong, dong huong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh qua » tranh cua, thanh qua, trinh qua
qua dung » quang dung, su dung, qua song
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu manh) or (((chieu sach) OR (chiet tach)))) - canh tranh qua dung huong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (((chieu sach) OR (chiet tach)))) - canh tranh qua dung huong dan phan cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (((chieu sach) OR (chiet tach)))) - canh tranh qua dung huong dan phan cac*".