Perhaps you should try some spelling variations:
danh dai » danh dau, danh di, danh sai
van chat » cao chat
hieu van » hieu va, thien van, lieu va
lang ha » long ha
sach ky » sach y, sach ty, sach kem
thuc va » thuc dan, thuc day
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
ha hoi » hoa hoi, ha noi, xa hoi
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) or (sac ky)) lang ha hoi. hieu van chat ((thuc va) OR (thuc vat)) danh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) lang ha hoi. hieu van chat ((thuc va) OR (thuc vat)) danh dai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sac ky)) lang ha hoi. hieu van chat ((thuc va) OR (thuc vat)) danh dai cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sac ky)) lang ha hoi. hieu van chat ((thuc va) OR (thuc vat)) danh dai cuu tre*.