Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cuong danh » cuon danh, huong dan, cuong linh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
hoc kien » hoc hien, hoc vien, hoc lien
hoa kien » hoa bien, hoa hien, hoa dien
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc kien) or (hoa kien)) sach - hanh trinh cua nhung ((cong tan) or (cuong danh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc kien) OR (hoa kien)) sach - hanh trinh cua nhung ((cong tan) OR (cuong danh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc kien) or (hoa kien)) sach - hanh trinh cua nhung ((cong tan) or (cuong danh)) toan ban*.