Perhaps you should try some spelling variations:
giai thanh » gia thanh, gian thanh, giay thanh
thuc giai » thuoc giao, hoc giai, thuc thai
su triet » su viet, su tien
ve triet » va trien
thanh vi » hanh vi, thanh va, thanh ve
cau thuc » cau truc, cuu thuc, can thuc
sach ty » sach y, sach tu, sach thu
so sach » so sanh, bo sach, co sach
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((xang x) or (nang x)) hoi. lieu va cau thuc giai thanh vi ((ve triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((xang x) OR (nang x)) hoi. lieu va cau thuc giai thanh vi ((ve triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((xang x) or (nang x)) hoi. lieu va cau thuc giai thanh vi ((ve triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((xang x) or (nang x)) hoi. lieu va cau thuc giai thanh vi ((ve triet) OR (su triet))*.