Perhaps you should try some spelling variations:
quang trung » truong trung
tranh quang » tran quang, trinh quang, tinh quang
trung huong » truong huong, trung uong, trung duong
hanh tranh » canh tranh, hanh trinh, hanh trang
tran manh » tran minh, tran thanh, tran van
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
than man » than ma, thanh san, than phan

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 (doc hieu)) sach - hanh tranh quang trung huong dan ((than man) OR (tran manh))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) sach - hanh tranh quang trung huong dan ((than man) OR (tran manh)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doc hieu)) sach - hanh tranh quang trung huong dan ((than man) OR (tran manh))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) sach - hanh tranh quang trung huong dan ((than man) OR (tran manh))*.