Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
chat xuc » chat huu, cam xuc, chao xu
van hanh » van thanh, ban hanh, van anh
hoc sach » hoc sinh, hoc cac, hoc anh
ty tang » tay tang, ty xang, ty hang
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
xuc van » duc van, luc van, vuc van
hanh di » hanh vi, hanh de, hang di
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua
cua cu » cua chu, cua cau, cua su

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) or (hoc sach)) ty tang ma hoi. hieu va chat xuc van hanh di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ty tang ma hoi. hieu va chat xuc van hanh di cua cu.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) ty tang ma hoi. hieu va chat xuc van hanh di cua cu*.