Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang xay » dang xay, nganh xay, nang xuan
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
dac ban » dac san, duc ban, da ban
cac ban » cac dan, cac van, can ban
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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 ty nang xay hoi. hieu ve cac ((dac ban) or (cac ban)) mach vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xay hoi. hieu ve cac ((dac ban) OR (cac ban)) mach vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xay hoi. hieu ve cac ((dac ban) or (cac ban)) mach vi cua triet*.