Perhaps you should try some spelling variations:
sach tham » sach nha
tham lang » nham nang, pham hang, thai bang
su triet » su viet, su tien, ve triet
dan lap » phan lap, dan luan
dan lam » van lam, dan nam, da lam
tu sach » thu sach, su sach, te sach
lang ma » lang mai, lang man, lang ha
ve cai » va cai, ve tai, ve cau
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tham lang ma hoi. hieu ((ve cai) or (ve cac)) duc va ((dan lam) or (dan lap)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tham lang ma hoi. hieu ((ve cai) OR (ve cac)) duc va ((dan lam) OR (dan lap)) su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tham lang ma hoi. hieu ((ve cai) or (ve cac)) duc va ((dan lam) or (dan lap)) su triet*.