Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong hoc » khung hoc, thong hoc, khong thuoc
ban thuc » ban thuoc, dan thuc, van thuc
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
hai van » thai van, ha van, hai tan
tu ban » thu ban, te ban
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban thuc vat, nghien cuu ((van hoc) or (van hoa)) nganh khong hoc ma hai van nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban thuc vat, nghien cuu ((van hoc) OR (van hoa)) nganh khong hoc ma hai van nhan van.
• Adding a wildcard symbol may retrieve word variants: tu ban thuc vat, nghien cuu ((van hoc) or (van hoa)) nganh khong hoc ma hai van nhan van*.