Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua
cua su » qua 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 (thuoc sach)) ty ((nang ma) OR (tang ma)) hoi. hieu va cac xuc van anh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuoc sach)) ty ((nang ma) OR (tang ma)) hoi. hieu va cac xuc van anh vi cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (thuoc sach)) ty ((nang ma) OR (tang ma)) hoi. hieu va cac xuc van anh vi cua su".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuoc sach)) ty ((nang ma) OR (tang ma)) hoi. hieu va cac xuc van anh vi cua su*.