Perhaps you should try some spelling variations:
"hoc sach my thuat chung dung sai marketing" » "hoc sach my thuat chung dung tac marketing", "hoc sach my thuat chung dung van marketing", "hoc sach my thuat chung dung thi marketing", "hoc sach my thuat chuong dung sai marketing", "hoc sach my thuat hung dung sai marketing", "hoc sach my thuat nhung dung sai marketing", "hoc sach my thuat cung dung sai marketing", "hoc sach my thuat phung dung sai marketing", "hoc sinh my thuat chung dung sai marketing", "hoc cac my thuat chung dung sai marketing", "hoc anh my thuat chung dung sai marketing", "hoc sach ky thuat chung dung sai marketing", "hoc sach ki thuat chung dung sai marketing", "hoc sach va thuat chung dung sai marketing", "hoc sach my thuat chung dung tai marketing", "hoc sach my thuat chung dung va marketing", "hoc sach my thuat chung dung dat marketing", "hoc sach mky thuat chung dung sai marketing", "hoc sach mkxy thuat chung dung sai marketing", "hoc sach mki thuat chung dung sai marketing", "hoc sach ty thuat chung dung sai marketing", "hoc sach mau thuat chung dung sai marketing", "hoc sach moi thuat chung dung sai marketing"
"bo sach y thuat huong ung tri marketing" » "bo sach y thuat huong ung trong marketing", "bo sach y thuat huong ung tvqg marketing", "bo sach y thuat huong ung _ marketing", "bo sach y thuat chuong ung tri marketing", "bo sach y thuat hung ung tri marketing", "bo sach y thuat tuong ung tri marketing", "bo sach y thuat dung ung tri marketing", "co sach y thuat huong ung tri marketing", "bo sach ky thuat huong ung tri marketing", "bo sach kxy thuat huong ung tri marketing", "bo sach ki thuat huong ung tri marketing", "bo sach y thuat huong dung tri marketing", "bo sach y thuat huong cung tri marketing", "bo sach y thuat huong quang tri 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 y thuat huong ung tri marketing") or ("hoc sach my thuat chung dung sai marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach y thuat huong ung tri marketing") OR ("hoc sach my thuat chung dung sai marketing")).
• Removing quotes may allow a broader search: (( bo sach y thuat huong ung tri marketing ) or ( hoc sach my thuat chung dung sai marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach y thuat huong ung tri marketing") or ("hoc sach my thuat chung dung sai marketing"))*.