Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
chua te » cua te, chua tu, chua xe
y nang » ky nang, v nang, may nang
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: su sach ((y nang) or (ly nang)) xa hoi. hieu qua cac duc va hanh vi ((chua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ly nang)) xa hoi. hieu qua cac duc va hanh vi ((chua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (ly nang)) xa hoi. hieu qua cac duc va hanh vi ((chua te) or (cua tu))*.