Perhaps you should try some spelling variations:
"bo sach y thuat phung dung trong marketing" » "bo sach y thuat phung dung tri marketing", "bo sach y thuat hung dung trong marketing", "bo sach y thuat chung dung trong marketing", "bo sach y thuat nhung dung trong marketing", "bo sach y thuat phuong dung trong marketing", "bo sach y thuat phung dang trong marketing", "co sach y thuat phung dung trong marketing", "hoc sach y thuat phung dung trong marketing", "bo sach ky thuat phung dung trong marketing", "bo sach my thuat phung dung trong marketing", "bo sach kxy thuat phung dung trong marketing"
"bo sach dau thau pdung dung tvqg marketing" » "bo sach dau thau pdung dung tri marketing", "bo sach dau thau dung dung tvqg marketing", "bo sach dau thau phuong dung tvqg marketing", "bo sach dau thau ung dung tvqg marketing", "bo sach dau thau pdung dung tong marketing", "bo sach dao thau pdung dung tvqg marketing", "bo sach dat thau pdung dung tvqg marketing", "bo sach mau thau pdung dung tvqg marketing", "bo sach dau tu pdung dung tvqg marketing", "co sach dau thau pdung dung tvqg marketing", "hoc sach dau thau pdung dung tvqg marketing"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("bo sach dau thau pdung dung tvqg marketing") or ("bo sach y thuat phung dung trong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach dau thau pdung dung tvqg marketing") OR ("bo sach y thuat phung dung trong marketing")).
• Removing quotes may allow a broader search: (( bo sach dau thau pdung dung tvqg marketing ) or ( bo sach y thuat phung dung trong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach dau thau pdung dung tvqg marketing") or ("bo sach y thuat phung dung trong marketing"))*.