Perhaps you should try some spelling variations:
cham sac » cham soc, pham sach, cham mat
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. lieu va ((cham sac) or (cap sac)) van hanh vi ((cuu tre) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. lieu va ((cham sac) OR (cap sac)) van hanh vi ((cuu tre) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. lieu va ((cham sac) or (cap sac)) van hanh vi ((cuu tre) or (va triet))*.