Perhaps you should try some spelling variations:
cua triet » su triet, va triet
thuoc sac » thuoc sach, thuoc dac, thuoc sai
cac giao » cach giao, cac giai, ca giao
hanh vai » hanh vi, hanh va, hanh tai
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
giao va » gia va, giai va, gian va
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sac ky nang xa hoi. hieu va cac giao va hanh vai ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky nang xa hoi. hieu va cac giao va hanh vai ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky nang xa hoi. hieu va cac giao va hanh vai ((cua triet) or (cua viet))*.