Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, lieu va
ban hang » ngan hang
van hanh » van thanh, van anh, van ban
mai hoi » mai khoi, dai hoi, lai hoi
van lam » van nam
lam xuc » cam xuc, lam duoc
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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 y nang mai hoi. hieu van lam xuc ((((ban hanh) or (ban hang))) or (van hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang mai hoi. hieu van lam xuc ((((ban hanh) OR (ban hang))) OR (van hanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang mai hoi. hieu van lam xuc ((((ban hanh) or (ban hang))) or (van hanh)) vi cua tre*.