Perhaps you should try some spelling variations:
trinh nghien » trinh nghe, trinh thiet, trinh dien
nghiem duoc » nghiem thuoc, nghe duoc
thuoc sach » hoc sach, nuoc sach, thuat sach
nghien du » nghiep du, nghien cuu, nghiem dau
thu canh » thu cong, thu ban, thu hang
duoc hoc » quoc hoi
du hoc » tu hoc
kinh » dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((thu canh) OR (thuc hanh)) trinh nghien du hoc ) or ( thuoc sach kinh nghiem duoc hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((thu canh) OR (thuc hanh)) trinh nghien du hoc ) OR ( thuoc sach kinh nghiem duoc hoc ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((thu canh) OR (thuc hanh)) trinh nghien du hoc ) or ( thuoc sach kinh nghiem duoc hoc ))*".