Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
toc sac » toc sach, toc san, hoc sach
dan vat » dang vat, van vat, dan va
dan vai » dan va, dan tai, den vai
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky dang cay phoi. hieu va nam ((thuc va) OR (thuc day)) ((dan vai) or (dan vat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky dang cay phoi. hieu va nam ((thuc va) OR (thuc day)) ((dan vai) OR (dan vat)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky dang cay phoi. hieu va nam ((thuc va) OR (thuc day)) ((dan vai) or (dan vat)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sac ky dang cay phoi. hieu va nam ((thuc va) OR (thuc day)) ((dan vai) or (dan vat)) cua tre*.