Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang hanh » dang thanh, ban hanh, dang hung
dang van » hoang van, hang va
nam thuc » nam thuoc, am thuc, nam thu
hieu ha » hieu hoa, hieu va, hieu ca
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach

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 ky ((nang xa) or (nang x)) hoi. hieu ha nam thuc ((dang hanh) OR (dang van)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (nang x)) hoi. hieu ha nam thuc ((dang hanh) OR (dang van)) vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) or (nang x)) hoi. hieu ha nam thuc ((dang hanh) OR (dang van)) vai cua triet*".