Perhaps you should try some spelling variations:
sach tham » sach nha
tham lang » nham nang, pham hang, thai bang
thu sach » tu sach, thuat sach, thuoc sach
su triet » su viet, ve triet
dan lam » van lam, dan lap, dan nam
su tien » su kien, su hien, tu tieng
lang ma » lang mai, lang man, lang ha
ve cau » ke cau, va cau, le cau
luc va » duc va, tuc va, loc va
va dan » ca dan, va dao, va dau
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac

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 tham lang ma hoi. hieu ((ve cau) or (ve cac)) luc va dan lam ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tham lang ma hoi. hieu ((ve cau) OR (ve cac)) luc va dan lam ((su triet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: thu sach tham lang ma hoi. hieu ((ve cau) or (ve cac)) luc va dan lam ((su triet) or (su tien))*.