Perhaps you should try some spelling variations:
khanh sinh » khang sinh, khanh linh, khanh vinh
hieu van » hieu va, thien van, lieu va
cam thuc » am thuc, nam thuc, cam thu
va khanh » van khanh, va thanh, vu khanh
sinh cua » manh cua, dinh cuu, sinh va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang xa hoi. ((hieu ve) or (hieu van)) cam thuc va khanh sinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam thuc va khanh sinh cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. ((hieu ve) or (hieu van)) cam thuc va khanh sinh cua tre*.