Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh hai » tinh thai, tinh chat, trinh han
tinh lai » tinh lao, minh lai, tinh bai
kinh lai » kinh hai, minh lai, gianh lai
cam truc » cau truc, nam truc, lam truoc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
va cam » va cham, va cac, va cao
van xa » van xay, van ha, dan xa
ky van » ly van, ty van, ky va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky van xa hoi. hieu va cam truc va ((kinh lai) or (((tinh lai) OR (tinh hai)))) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky van xa hoi. hieu va cam truc va ((kinh lai) OR (((tinh lai) OR (tinh hai)))) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky van xa hoi. hieu va cam truc va ((kinh lai) or (((tinh lai) OR (tinh hai)))) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky van xa hoi. hieu va cam truc va ((kinh lai) or (((tinh lai) OR (tinh hai)))) cua triet*.