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

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