Perhaps you should try some spelling variations:
thanh sac » thanh san, thanh bac, thanh cac
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
sac van » cac van, san van, sat van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
anh vi » anh va, anh ve, anh vu

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

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