Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, hieu ve
ban hang » ngan hang
hang vai » hang va, hang tai, hang hai
cau treo » cau theo, cau tren, cau triet
nam mua » nam cua, nam qua, nam xua
mua ban » cua ban, qua ban
vai cau » va cau, van cau, vai cac
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi

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 ((ma hoi) OR (ma hoa)). ((hieu van) OR (lieu va)) nam mua ban hang vai cau treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ((ma hoi) OR (ma hoa)). ((hieu van) OR (lieu va)) nam mua ban hang vai cau treo".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((ma hoi) OR (ma hoa)). ((hieu van) OR (lieu va)) nam mua ban hang vai cau treo*.