Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va trien » va truyen, va thiet, va tuyen
cac thuc » cach thuc, cac thu, can thuc
ban hanh » ban hang
thuc ban » thuoc ban, thuc dan, thu ban
hanh di » hanh vi, hanh de, hang di
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
vu nang » vuc nang, va nang, vu dang
v nang » va nang, van nang, voi nang
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((v nang) or (vu nang)) xa hoi. hieu ve cac thuc ban hanh di ((cua triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (vu nang)) xa hoi. hieu ve cac thuc ban hanh di ((cua triet) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) or (vu nang)) xa hoi. hieu ve cac thuc ban hanh di ((cua triet) or (va trien))*.