Perhaps you should try some spelling variations:
thuoc sach » hoc sach, thuoc sinh, toc sach
thuat sach » thuat lanh, thuat san
nuoc sach » nguoi sach, hoc sach, cuoc cach
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
dan va » doan va, dan ca, ban va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((thuoc sach) OR (thuat sach))) or (nuoc sach)) y nang ma hoi. lieu va cac dan va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((thuoc sach) OR (thuat sach))) OR (nuoc sach)) y nang ma hoi. lieu va cac dan va hanh vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((thuoc sach) OR (thuat sach))) or (nuoc sach)) y nang ma hoi. lieu va cac dan va hanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: ((((thuoc sach) OR (thuat sach))) or (nuoc sach)) y nang ma hoi. lieu va cac dan va hanh vi cua vat*.