Perhaps you should try some spelling variations:
nghiep cach » nghiep sach, nghiep cay, nghiep bac
nghien cac » nghien cuu, nghiep cay, nghiep bac
cach thuc » anh thuc, cac thu
hoc cach » hoc cac, hoc sach, cuoc cach
cong coc » cong cuoc, cong cac, cong co
coc hanh » hoc hanh, doc hanh, co hanh
hanh hoa » thanh hoa, khanh hoa, hang hoa
nhan van » nhan dan, nhan va, phan van
va nhan » van nhan, ca nhan, va phan
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cach thuc vat, ((nghien cac) OR (nghiep cach)) cong coc hanh hoa hoc xa hoi va nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc cach thuc vat, ((nghien cac) OR (nghiep cach)) cong coc hanh hoa hoc xa hoi va nhan van".
• Adding a wildcard symbol may retrieve word variants: hoc cach thuc vat, ((nghien cac) OR (nghiep cach)) cong coc hanh hoa hoc xa hoi va nhan van*.