Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ky dang » ky nang, ky danh
tinh vi » trinh vi, tinh voi, tinh va
ky tang » ky nang, kho tang, ky trong
va tinh » may tinh
luc va » duc va, tuc va, loc va
ve coc » ve cuoc, ve cac
vi luu » vi lua
ve co » vo co, va co, de co
tru » truc

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky dang) or (ky tang)) xa hoi. hieu ((ve coc) or (ve co)) luc va tinh vi luu tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky dang) OR (ky tang)) xa hoi. hieu ((ve coc) OR (ve co)) luc va tinh vi luu tru.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky dang) or (ky tang)) xa hoi. hieu ((ve coc) or (ve co)) luc va tinh vi luu tru*.