Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
xuc van » duc van, luc van, vuc van
sach ky » sac ky, sach y, sach kem
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ky) OR (sach ty)) nang xa hoi. hieu va cam xuc van ((thanh va) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sach ty)) nang xa hoi. hieu va cam xuc van ((thanh va) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ky) OR (sach ty)) nang xa hoi. hieu va cam xuc van ((thanh va) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) OR (sach ty)) nang xa hoi. hieu va cam xuc van ((thanh va) or (hanh vi)) cua tre*.