Perhaps you should try some spelling variations:
"vu sach va le nguoi can duong minh" » "vu sach va le nguoi can duong manh", "vu sach va le nguoi can truong minh", "vu sach va le nguoi can thong minh", "vu sach va le nguoi san duong minh", "vu sach va le nguoi dan duong minh", "vu sach va le nguoi cao duong minh", "vu sach va le nguoi canh duong minh", "vu sach va le nguoi con duong minh", "vu sach va le nguoi van duong minh", "vu sach va ly nguoi can duong minh", "vu sach va lam nguoi can duong minh", "vu sach va den nguoi can duong minh", "vu bach va le nguoi can duong minh", "su sach va le nguoi can duong minh", "vu khach va le nguoi can duong minh", "vu sach xa le nguoi can duong minh", "vu sach ha le nguoi can duong minh", "vu sach dao le nguoi can duong minh", "vu sach va de nguoi can duong minh", "vu sach vu le nguoi can duong minh"
"te sach cba ve gio lam thong tin" » "te sach cba ve gio lam trong tin", "te sach cba ve gio nam thong tin", "te sach cba ve gio lam truong tin", "te sach cua ve gio lam thong tin", "te sach nha ve gio lam thong tin", "te sach bai ve gio lam thong tin", "toc sach cba ve gio lam thong tin", "te sach cba ve gioi lam thong tin", "te sach cba ve gia lam thong tin", "te sach cba ve gi lam thong tin", "te sach ca ve gio lam thong tin", "te sach cba ve giao lam thong tin", "te sach cba viec gio lam thong tin"

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: (("te sach cba ve gio lam thong tin") or ("vu sach va le nguoi can duong minh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te sach cba ve gio lam thong tin") OR ("vu sach va le nguoi can duong minh")).
• Removing quotes may allow a broader search: (( te sach cba ve gio lam thong tin ) or ( vu sach va le nguoi can duong minh )).
• Adding a wildcard symbol may retrieve word variants: (("te sach cba ve gio lam thong tin") or ("vu sach va le nguoi can duong minh"))*.