Perhaps you should try some spelling variations:
thanh dam » thanh dat, thanh nam, thanh tam
thu sach » thuat sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
cam thuc » am thuc, nam thuc, cam thu
tang van » dang van, hoang van, trong van
tu sach » su sach, tu cach, vu sach
dam cua » dai cua, day cua, nam cua
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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))) or (te sach)) ky tang van hoi. hieu va cam thuc va thanh dam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (thu sach))) OR (te sach)) ky tang van hoi. hieu va cam thuc va thanh dam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (thu sach))) or (te sach)) ky tang van hoi. hieu va cam thuc va thanh dam cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (thu sach))) or (te sach)) ky tang van hoi. hieu va cam thuc va thanh dam cua tre*.