Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cuu tre, cua triet, dua tren
va cam » va cham, va cac, va cao
cua te » cua tu
tuan » quan, tran, luan

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

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