Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
mach hai » manh hai, mach phan, mach vi
nang xay » dang xay, nganh xay, nang xuan
hai cua » thai cua, dai cua, hoi cua
cac ban » cac dan, cac van, can ban
dac ban » dac san, duc ban, da ban
su sach » vu sach
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
so sach » so sanh, bo sach, co sach
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) OR (so sach)) ky nang xay hoi. hieu ve cac ((dac ban) or (cac ban)) mach hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xay hoi. hieu ve cac ((dac ban) OR (cac ban)) mach hai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang xay hoi. hieu ve cac ((dac ban) or (cac ban)) mach hai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang xay hoi. hieu ve cac ((dac ban) or (cac ban)) mach hai cua triet*.