Perhaps you should try some spelling variations:
tan hanh » tan thanh, tang hanh, toan hanh
cua viet » ca viet, hoa viet, cua vat
thu san » thuy san, thu ban, phu san
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
cao duc » dao duc, cao suc, giao duc
hanh di » hanh vi, hanh de, hang di
ca duc » cua duc, ca dua, ha duc
di cua » dai cua, doi cua, de cua

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

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