Perhaps you should try some spelling variations:
phan khong » nhan khong, pham khong, phan thong
cuu thong » cuu thuong, cuu tong, cuu chong
thong hoc » thuong hoc, tuong hoc, thong hoa
phan hong » phan cong, pham hong, phan song
thuoc ban » thuoc tan, thuoc dang, thu ban
sach doi » sach hoi, sach moi, sach dao
phap vat » phap luat, phap phat, phap viet
vu sach » vu bach, su sach, vu khach
doi tap » doi tac, doi dap, doi tai
ban hoc » bang hoc, van hoc, bai hoc
hoc ban » hoc bang, hoc dan, hoc bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach doi tap, nghien cuu thong hoc ((phan khong) OR (phan hong)) thuoc ban hoc ban phap vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach doi tap, nghien cuu thong hoc ((phan khong) OR (phan hong)) thuoc ban hoc ban phap vat*".