Perhaps you should try some spelling variations:
phan hong » phan cong, phan song, phan thuong
pham hong » pham hoang, pham cong, pham thuong
thu sach » tu sach, thuat sach, thuoc sach
sach hoi » sach doi, sach moi, cach thoi
phan van » pham van, thanh van, luan van
hoi tap » hoi dap, hoc tap, hoi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va phan » van phan, va phat, va phap
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: thu sach hoi tap, nghien cuu mon hoc ((phan hong) OR (pham hong)) hoc xa hoi va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoi tap, nghien cuu mon hoc ((phan hong) OR (pham hong)) hoc xa hoi va phan van".
• Adding a wildcard symbol may retrieve word variants: thu sach hoi tap, nghien cuu mon hoc ((phan hong) OR (pham hong)) hoc xa hoi va phan van*.