Perhaps you should try some spelling variations:
trinh thanh » tinh thanh, trinh han, trinh toan
thanh thang » nhanh thang, thanh thanh, thanh hang
hanh trinh » canh tranh, hanh chinh
thang cong » thanh cong, thang long, thong cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
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: ((ho chieu) or (theo tieu)) sach - hanh trinh thanh thang cong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) sach - hanh trinh thanh thang cong tap toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) sach - hanh trinh thanh thang cong tap toan ban*.