Perhaps you should try some spelling variations:
thi nang » thi cong, ki nang, thi hanh
thuc van » thuc vat, thuc dan, thuc va
hanh tri » thanh tri, hanh tai, hanh trinh
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh
vuc van » duc van, luc van, chuc van
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang xa hoi. ((thi van) or (thi nang)) bac ((vuc van) OR (thuc van)) hanh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang xa hoi. ((thi van) OR (thi nang)) bac ((vuc van) OR (thuc van)) hanh tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang xa hoi. ((thi van) or (thi nang)) bac ((vuc van) OR (thuc van)) hanh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: so sac ky nang xa hoi. ((thi van) or (thi nang)) bac ((vuc van) OR (thuc van)) hanh tri cua tre*.