Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
cuu tre » cua tre, cau tren, cau treo
va cao » va cac, va dao, va bao
vi cuu » vi luu, vinh cuu
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang xa hoi. hieu ((va cao) OR (va co)) duc van hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky nang xa hoi. hieu ((va cao) OR (va co)) duc van hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. hieu ((va cao) OR (va co)) duc van hanh vi cuu tre*.