Perhaps you should try some spelling variations:
van triet » van thiet, van trieu, hanh triet
van dinh » van minh, van dich, va dinh
va triet » va thiet, va trien, ve triet
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach kem
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
dinh su » dinh so, hinh su, dinh cu
ve cam » ve cham, ve cac, va cam

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

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