Perhaps you should try some spelling variations:
mao triet » tao thiet, va triet, bo triet
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
so thiet » soc thiet, hoc thiet, hoa thiet
xanh lam » hanh lam, dinh lam, xanh a
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
va xanh » va danh, va hanh, va anh
mai hoi » mai khoi, dai hoi, lai hoi
ve cau » ke cau, va cau, le cau
tuc va » thuc va, truc va, tuc xa
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 nang mai hoi. hieu ((ve cau) or (ve cac)) tuc va xanh lam ((so thiet) or (mao triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tham nang mai hoi. hieu ((ve cau) OR (ve cac)) tuc va xanh lam ((so thiet) OR (mao triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach tham nang mai hoi. hieu ((ve cau) or (ve cac)) tuc va xanh lam ((so thiet) or (mao triet))*.