Perhaps you should try some spelling variations:
cach thuoc » cach thuc, cay thuoc, cach thoi
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh hoa, nganh khong, doanh khoa
thuoc tai » nuoc tai, hoc tai, thuoc ma
hoc nganh » hoc nhanh
khoa hoc » hoa hoc
phan van » pham van, thanh van, tran van
tu cach » tu cac
mot hoc » mon hoc, mo hoc, mot goc
hoc lai » hoc dai, hoc bai, hoc lam
lai hoi » dai hoi, lai hoa, lai roi
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thuoc tai, nghien cua mot hoc nganh khoa hoc lai hoi va ((phan van) OR (luan van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thuoc tai, nghien cua mot hoc nganh khoa hoc lai hoi va ((phan van) OR (luan van))".
• Adding a wildcard symbol may retrieve word variants: tu cach thuoc tai, nghien cua mot hoc nganh khoa hoc lai hoi va ((phan van) OR (luan van))*.