Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
doi cua » dai cua
hoi cua » hoi chuc
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cam tu » cam thu, nam tu, dam tu

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 v nang cao hoi. hieu ve ((cam xuc) or (cam tu)) va thanh ((doi cua) or (hoi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach v nang cao hoi. hieu ve ((cam xuc) OR (cam tu)) va thanh ((doi cua) OR (hoi cua)) te.
• Adding a wildcard symbol may retrieve word variants: so sach v nang cao hoi. hieu ve ((cam xuc) or (cam tu)) va thanh ((doi cua) or (hoi cua)) te*.