Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach han » sach tham, sach danh, sach nang
sinh dai » sinh thai, sinh vat, sinh li
cham tuc » nham thuc, pham thuc, tham thuc
ve cham » va cham, ve chat, vu cham
te sach » toc sach
tang ma » mang may, tang van
sang ma » nang ma, sang tao, mang may
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa

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 han ((sang ma) or (tang ma)) hoa. hieu ve cham tuc va ((sinh dai) OR (si dai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach han ((sang ma) OR (tang ma)) hoa. hieu ve cham tuc va ((sinh dai) OR (si dai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach han ((sang ma) or (tang ma)) hoa. hieu ve cham tuc va ((sinh dai) OR (si dai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach han ((sang ma) or (tang ma)) hoa. hieu ve cham tuc va ((sinh dai) OR (si dai)) cua triet*.