Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
cac xuc » cam xuc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
dan va » doan va, dan ca, ban va

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 ty nang xa hoi. hieu ve ((cac xuc) or (cac nuoc)) cam ((gan vi) or (dan va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu ve ((cac xuc) OR (cac nuoc)) cam ((gan vi) OR (dan va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu ve ((cac xuc) or (cac nuoc)) cam ((gan vi) or (dan va)) cua tre*.