Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoi » sach doi, sach moi, cach thoi
cuu long » cuu cong, cuu tong, cuu nang
long hoc » dong hoc, long soc, long thuoc
hoa phan » co phan
phat van » pham van, phan van, phap van
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoi tap, nghien cuu long hoc nganh hoa hoc ma ((hoa phan) OR (hoa dan)) phat van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi tap, nghien cuu long hoc nganh hoa hoc ma ((hoa phan) OR (hoa dan)) phat van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu long hoc nganh hoa hoc ma ((hoa phan) OR (hoa dan)) phat van*.