Perhaps you should try some spelling variations:
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ve tai » te tai, de tai, le tai
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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 xa hoi. hieu ((ve tai) or (va cac)) xuc va hanh vi ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((ve tai) OR (va cac)) xuc va hanh vi ((cua tu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ((ve tai) or (va cac)) xuc va hanh vi ((cua tu) or (cua su))*.