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
theo chieu » theo tieu, ho chieu, theo chu
than ban » thanh ban, toan ban, nhuan ban
than man » than ma, thanh san, tran manh
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doi chi)) sach - hanh tranh quang trung huong dan ((than ban) or (than man))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) sach - hanh tranh quang trung huong dan ((than ban) OR (than man)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) sach - hanh tranh quang trung huong dan ((than ban) or (than man))*.