Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
tinh voi » trinh voi, tinh doi, binh voi
lang xa » dang xay, lang van
lang ha » long ha
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
va tinh » may tinh
voi cua » hoi cua, doi cua, moi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y ((lang xa) OR (lang ha)) hoi. hieu qua cac duc va tinh voi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach y ((lang xa) OR (lang ha)) hoi. hieu qua cac duc va tinh voi cua triet".
• Adding a wildcard symbol may retrieve word variants: doc sach y ((lang xa) OR (lang ha)) hoi. hieu qua cac duc va tinh voi cua triet*.