Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cong tuan » cong luan, cong thanh, cong quang
trinh va » trinh van, trinh vat, trinh ve
cong tan » cong tac, cong san, cong thanh
ban ban » ban banh, van ban, can ban
doi co » doi bo, hoi co, noi co
moi co » mai co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi co) OR (moi co)) sach - hanh trinh va nhung ((cong tuan) or (cong tan)) ban ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi co) OR (moi co)) sach - hanh trinh va nhung ((cong tuan) OR (cong tan)) ban ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi co) OR (moi co)) sach - hanh trinh va nhung ((cong tuan) or (cong tan)) ban ban".
• Adding a wildcard symbol may retrieve word variants: ((doi co) OR (moi co)) sach - hanh trinh va nhung ((cong tuan) or (cong tan)) ban ban*.