Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sang tao » hang tai
vat hanh » vat thanh, van hanh, va hanh
ve cham » va cham, ve chat, vu cham
hanh va » hang va, hanh vi
dau tre » dau tren, dau tien, cau tren
tao hoi » tao khoi, tao boi, tay hoi
y sang » _ sang, duy sang
va cai » va cac, va bai, va dai
ve cai » ve cac, ve tai, ve cau
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y sang tao hoi. hieu ((((ve cai) or (va cai))) or (ve cham)) thuc vat hanh va dau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y sang tao hoi. hieu ((((ve cai) OR (va cai))) OR (ve cham)) thuc vat hanh va dau tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y sang tao hoi. hieu ((((ve cai) or (va cai))) or (ve cham)) thuc vat hanh va dau tre*.