Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
hang doi » hang di, hang loi, huong doi
thu nang » thi nang, thu hang, thu bang
ve pham » v pham, ve phan, ve phat
hanh di » hanh vi, hanh de, hang di
su sach » so sach, vu sach
duy va » duy vat, duy van, day va
x hoi » xa hoi, o hoi, x ho

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 thu nang x hoi. hieu ((ve pham) or (vi pham)) duy va ((hanh di) or (hang doi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu nang x hoi. hieu ((ve pham) OR (vi pham)) duy va ((hanh di) OR (hang doi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach thu nang x hoi. hieu ((ve pham) or (vi pham)) duy va ((hanh di) or (hang doi)) cua triet*.