Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
lang van » dang van, tang van, hoang van
va cham » va chat, va tham
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, ky tang
van hoe » van hoa, van hoc, van hieu
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cua te » cua tu
ca dan » cac dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (tu sach)) ky lang van hoe. hieu va cham thuc ((ca dan) OR (ca dao)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (tu sach)) ky lang van hoe. hieu va cham thuc ((ca dan) OR (ca dao)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (tu sach)) ky lang van hoe. hieu va cham thuc ((ca dan) OR (ca dao)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (tu sach)) ky lang van hoe. hieu va cham thuc ((ca dan) OR (ca dao)) vai cua te*.