Perhaps you should try some spelling variations:
chat thien » phat trien, cai thien, phat hien
toc sach » hoc sach, doc sach, thuoc sach
kem chat » kem chu, lam chat, ve chat
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((y nang) or (v nang)) ma hoa. ((hieu va) OR (hieu qua)) cam xuc va hanh kem chat thien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y nang) OR (v nang)) ma hoa. ((hieu va) OR (hieu qua)) cam xuc va hanh kem chat thien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) or (v nang)) ma hoa. ((hieu va) OR (hieu qua)) cam xuc va hanh kem chat thien".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) or (v nang)) ma hoa. ((hieu va) OR (hieu qua)) cam xuc va hanh kem chat thien*.