Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
cau luc » cau truc, cau phuc
va cau » van cau, va cac, va dau
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (vu bach)) ky nang cao hoi. lieu va cau luc va thanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu bach)) ky nang cao hoi. lieu va cau luc va thanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (vu bach)) ky nang cao hoi. lieu va cau luc va thanh vi ((cua te) or (cua tu))*.