Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, lanh tranh
hanh trang » thanh trung, canh tranh, hanh trinh
doi chieu » doc hieu, doi chi, mot chieu
dung dung » ung dung, dung ung, dung dong
ho chieu » theo chieu, hoc thieu, mot chieu
cua dung » cua dang, cua dong, qua dung
dung anh » dung danh, duong anh, dong anh
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chieu)) sach - ((hanh tranh) OR (hanh trang)) cua dung dung anh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - ((hanh tranh) OR (hanh trang)) cua dung dung anh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) sach - ((hanh tranh) OR (hanh trang)) cua dung dung anh tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sach - ((hanh tranh) OR (hanh trang)) cua dung dung anh tuan cau*.