Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh hai » thanh hai, nhanh hai, hang hai
cham loc » chon loc, cham o, hau loc
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
su sach » so sach, vu sach

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

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