Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang tai » hang va, dung tai
hang dau » hang va
hieu cao » chieu cao, hieu cac, hieu ca
chat soc » cham soc, chat hoc, chat doc
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
tu sach » thu sach, su sach, te sach
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((lang xa) or (nang x)) hoi. hieu cao chat soc va ((hang dau) OR (hang tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (nang x)) hoi. hieu cao chat soc va ((hang dau) OR (hang tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((lang xa) or (nang x)) hoi. hieu cao chat soc va ((hang dau) OR (hang tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang xa) or (nang x)) hoi. hieu cao chat soc va ((hang dau) OR (hang tai)) cua triet*.