Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de 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 hoi) or (co hoc)). hieu ve ((cam xuc) or (chao xu)) va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ((cao hoi) OR (co hoc)). hieu ve ((cam xuc) OR (chao xu)) va hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ((cao hoi) or (co hoc)). hieu ve ((cam xuc) or (chao xu)) va hanh di cua te*.