Perhaps you should try some spelling variations:
thuoc nganh » thuong nganh, hoc nganh, chuc nganh
sang thuoc » dang thuoc, khang thuoc, dung thuoc
nganh hoa » thanh hoa, khanh hoa, danh hoa
phan phat » phap phat, van phat, phan phoi
cuu sang » cuu nang, cuu san, cua sang
hoa phan » hoa dan, co phan
phat van » pham van, phan van, phap van
tu sach » thu sach, su sach, te sach
hoi tap » hoc tap, hoi tai, hai tap

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) OR (hoi dap)), nghien cuu sang thuoc nganh hoa hoc ma hoa phan phat van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((hoi tap) OR (hoi dap)), nghien cuu sang thuoc nganh hoa hoc ma hoa phan phat van".
• Adding a wildcard symbol may retrieve word variants: tu sach ((hoi tap) OR (hoi dap)), nghien cuu sang thuoc nganh hoa hoc ma hoa phan phat van*.