Perhaps you should try some spelling variations:
trinh thien » trinh thiet, trinh tien, trinh nghien
thien quan » trien quang, lien quan, thien van
quan manh » quang manh, quan hanh, quan thanh
viet khoa » vien khoa, viec khoa, viet khoang
vien than » vien thanh, dien than, vien nhan
manh cua » doanh cua, ban cua
khoa hoc » hoa hoc
dien han » dien phan, dien than, dien ban
dien dan » hien dai, vien dai, gian dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: giao trinh thien quan manh cua nguoi viet khoa hoc ((((dien han) OR (dien dan))) or (vien than))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh thien quan manh cua nguoi viet khoa hoc ((((dien han) OR (dien dan))) OR (vien than))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh thien quan manh cua nguoi viet khoa hoc ((((dien han) OR (dien dan))) or (vien than))*".