Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
nganh hoa » thanh hoa, khanh hoa, danh hoa
thoi tap » toi tap, hoc tap, thoi dai
phan van » pham van, thanh van, luan van
tu cach » tu cac
va phan » van phan, va phat, va phap
hoc xa » hoc ma
tong » cong, dong, song

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 thoi tap, nghien cuu ((tuong ho) OR (tong hop)) nganh hoa hoc xa hoi va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi tap, nghien cuu ((tuong ho) OR (tong hop)) nganh hoa hoc xa hoi va phan van".
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cuu ((tuong ho) OR (tong hop)) nganh hoa hoc xa hoi va phan van*.