Perhaps you should try some spelling variations:
san phan » san pham, van phan, sat phan
thanh ve » thanh va, thanh vien, thanh van
phan duc » pham duc, phan tu, phan dau
cua viet » ca viet, hoa viet, cua vat
hieu san » hieu van, hieu sau, chieu sang
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, nang ma
hanh ve » hanh vi, hanh va, hanh kem
su tien » su kien, su hien, tu tieng
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu san phan duc ban ((thanh ve) OR (hanh ve)) ((su tien) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu san phan duc ban ((thanh ve) OR (hanh ve)) ((su tien) or (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu san phan duc ban ((thanh ve) OR (hanh ve)) ((su tien) or (cua viet))*.