Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
xa hanh » xa thanh, xa khanh, va hanh
van cau » van dau, van hau, van chat
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, lang van
cau tu » dau tu, cau truc
vi cua » vai cua, di cua
tu xa » tu xay, tu va, te xa

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) OR (sach y)) ((lang xa) or (dang xay)) hoi. hieu van cau tu xa hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) ((lang xa) OR (dang xay)) hoi. hieu van cau tu xa hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) ((lang xa) or (dang xay)) hoi. hieu van cau tu xa hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach y)) ((lang xa) or (dang xay)) hoi. hieu van cau tu xa hanh vi cua triet*.