Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vien cac » vien bach, vien da, gian cac
thanh ha » thanh hoa, thanh hai, nhanh ha
va thanh » gia thanh, ban thanh, va tinh
vien dai » hien dai
so sach » so sanh, bo sach, co sach
ty nang » ky nang, ty xang, ty hang
sach ty » sach y, sach tu, sach thu
tuc va » thuc va, truc va, tuc xa
ha cua » hoa cua, hai cua, nha cua
x hoi » o hoi, x ho, 5 hoi

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 ty nang ((x hoi) OR (xa hoi)). hieu ((vien cac) or (vien dai)) tuc va thanh ha cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang ((x hoi) OR (xa hoi)). hieu ((vien cac) OR (vien dai)) tuc va thanh ha cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang ((x hoi) OR (xa hoi)). hieu ((vien cac) or (vien dai)) tuc va thanh ha cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang ((x hoi) OR (xa hoi)). hieu ((vien cac) or (vien dai)) tuc va thanh ha cua triet*.