Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
ban xanh » ban hanh, ban anh, ban banh
hieu va » lieu va, hieu qua
xanh di » danh di, vanh dai, xanh tai
xuc ban » duc ban, cuc ban, quoc ban
cau xuc » cam xuc, cau luc, cau truc
tu sach » su sach, te sach, tu cach
lang ha » long ha
ty lang » tay lang, ty xang, ty hang
ha hoi » hoa hoi, ha noi, xa hoi
va cau » van cau, va cac, va dau
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (thu sach)) ty lang ha hoi. hieu va cau xuc ban xanh di cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty lang ha hoi. hieu va cau xuc ban xanh di cua tu".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ty lang ha hoi. hieu va cau xuc ban xanh di cua tu*.