Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac luc » cau luc, coc luc, cac nuoc
van anh » van thanh, van minh
y lang » o lang, _ lang, tay lang
tuan » quan, tran, luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y lang xa hoi. hieu qua cac luc ((van anh) OR (tuan anh)) viec cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y lang xa hoi. hieu qua cac luc ((van anh) OR (tuan anh)) viec cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach y lang xa hoi. hieu qua cac luc ((van anh) OR (tuan anh)) viec cua triet*.