Perhaps you should try some spelling variations:
tan hanh » tan thanh, tang hanh, toan hanh
cua viet » ca viet, hoa viet, cua vat
ky lang » ky dang, ky tang, tay lang
hanh de » hanh ve, hanh kem
tu ban » thu ban, te ban
qua ca » qua cac, qua cua, qua cai
ca duc » cao duc, cua duc, ca dua
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ((ky lang) or (ky nang)) xa hoi. hieu qua ca duc tan hanh de cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ((ky lang) OR (ky nang)) xa hoi. hieu qua ca duc tan hanh de cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ban ((ky lang) or (ky nang)) xa hoi. hieu qua ca duc tan hanh de cua viet*.