Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
thu sach » thuat sach, thuoc sach, thu hoach
ban xanh » ban hanh, ban anh, ban banh
xanh di » danh di, vanh dai, xanh tai
xuc ban » duc ban, cuc ban, quoc ban
tu sach » su sach, te sach, vu sach
tu cach » tu cac
va cam » va cham, va cac, va cao
di cau » da cau, diem cau
nang o » nang co, nang ho, nang ro
o hoc » co hoc, mo hoc, so hoc

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 (tu cach))) or (thu sach)) ky nang o hoc. lieu va cam xuc ban xanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (tu cach))) OR (thu sach)) ky nang o hoc. lieu va cam xuc ban xanh di cau tren.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (tu cach))) or (thu sach)) ky nang o hoc. lieu va cam xuc ban xanh di cau tren*.