Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
vien dai » hien dai
vien cac » vien bach, vien da, gian cac
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ((ma hoi) or (xa hoi)). hieu ((vien cac) or (vien dai)) xuc van thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((ma hoi) OR (xa hoi)). hieu ((vien cac) OR (vien dai)) xuc van thanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((ma hoi) or (xa hoi)). hieu ((vien cac) or (vien dai)) xuc van thanh dai cua triet*.