Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh cua » manh cua, hang cua, hanh sua
hieu va » lieu va, hieu qua
cua cua » cua chua, ca cua, qua cua
va hanh » van hanh, va thanh, va danh
cam loc » cam lo
su sach » vu sach
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
loc va » hoc va, luc va

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 xa hoi. ((hieu ve) or (hieu va)) cam loc va hanh cua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cam loc va hanh cua cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang xa hoi. ((hieu ve) or (hieu va)) cam loc va hanh cua cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang xa hoi. ((hieu ve) or (hieu va)) cam loc va hanh cua cua triet*.