Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
duc manh » suc manh, duc anh, duc minh
hanh lam » thanh lap, hanh kem, hanh va
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa
lam va » nam va, dam va, lam ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((y nang) OR (v nang)) ma hoi. hieu va cac ((duc manh) or (duc tan)) hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((y nang) OR (v nang)) ma hoi. hieu va cac ((duc manh) OR (duc tan)) hanh lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((y nang) OR (v nang)) ma hoi. hieu va cac ((duc manh) or (duc tan)) hanh lam va triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((y nang) OR (v nang)) ma hoi. hieu va cac ((duc manh) or (duc tan)) hanh lam va triet*.