Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cao hoc » co hoc, cho hoc, chat hoc
va hanh » van hanh, va thanh, va danh
co hoi » co hoc, co loi
vi cua » vai cua, di cua
cua te » cua tu

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 ty xang ((cao hoc) or (co hoi)). hieu van ((cam xuc) or (chao xu)) va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ((cao hoc) OR (co hoi)). hieu van ((cam xuc) OR (chao xu)) va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ((cao hoc) or (co hoi)). hieu van ((cam xuc) or (chao xu)) va hanh vi cua te*.