Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh voi » trinh voi, tinh doi, binh voi
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, nang ma, mang xa
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
hoc may » hoc ma
voi cua » hoi cua, doi cua, moi cua
lang xa » lang ha, dang xay, lang van
am hoc » ad hoc
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (su sach)) ky ((nang xa) OR (lang xa)) hoi. hieu va am hoc may tinh voi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky ((nang xa) OR (lang xa)) hoi. hieu va am hoc may tinh voi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (su sach)) ky ((nang xa) OR (lang xa)) hoi. hieu va am hoc may tinh voi cua triet*".