Perhaps you should try some spelling variations:
hang doi » hang di, hang loi, huong doi
ky lang » ky dang, ky tang, tay lang
xuc van » duc van, luc van, vuc van
hanh di » hanh vi, hanh de, hang di
ca viet » va viet, co viet, hoa viet
tu san » thu san, tu ban, tu can
qua ca » qua cac, qua cua, qua cai
ca xuc » cam xuc, chat xuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ((ky lang) OR (ky nang)) xa hoi. hieu qua ca xuc van ((hanh di) or (hang doi)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ((ky lang) OR (ky nang)) xa hoi. hieu qua ca xuc van ((hanh di) OR (hang doi)) ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ((ky lang) OR (ky nang)) xa hoi. hieu qua ca xuc van ((hanh di) or (hang doi)) ca viet".
• Adding a wildcard symbol may retrieve word variants: tu san ((ky lang) OR (ky nang)) xa hoi. hieu qua ca xuc van ((hanh di) or (hang doi)) ca viet*.