Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
toc sach » hoc sach, doc sach, thuoc sach
hang tai » hang va, dung tai
cua tre » cuu tre, cua triet, dua tren
va hang » van hang, va nang, va lang
thuc va » thuc vat, thuc dan, thuc day
va nham » va cham, va tham, va nha
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
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: ((te sach) or (toc sach)) ky dang xa hoi. lieu va nham thuc va hang tai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky dang xa hoi. lieu va nham thuc va hang tai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky dang xa hoi. lieu va nham thuc va hang tai ((cua tre) OR (cua te))*".