Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nuoc sach » nguoi sach, hoc sach, cuoc cach
thuc dan » thuc hanh, hoc dan, thuc vat
toc sach » hoc sach, doc sach, thuoc sach
lang ha » long ha
hieu va » lieu va, hieu qua
ky lang » ky nang, ky dang, ky tang
thuc va » thuc vat, thuc day
danh di » danh du, xanh di, danh dien
di cua » dai cua, doi cua, de cua
va tam » van tam, va tham, va tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (nuoc sach)) ky lang ha noi. hieu va tam ((thuc va) OR (thuc dan)) danh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (nuoc sach)) ky lang ha noi. hieu va tam ((thuc va) OR (thuc dan)) danh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (nuoc sach)) ky lang ha noi. hieu va tam ((thuc va) OR (thuc dan)) danh di cua triet".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (nuoc sach)) ky lang ha noi. hieu va tam ((thuc va) OR (thuc dan)) danh di cua triet*.