Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
va trien » va truyen, va thiet, va tuyen
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
dai va » mai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ((ma hoi) OR (xa hoi)). hieu ve cam tuc va hanh dai va trien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ((ma hoi) OR (xa hoi)). hieu ve cam tuc va hanh dai va trien".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((ma hoi) OR (xa hoi)). hieu ve cam tuc va hanh dai va trien*.