Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
thiet qua » thien quan, hieu qua, thien quy
qua dinh » qua kinh, quy dinh, qua danh
dinh cua » dinh cuu, sinh cua, dinh cu
hoc vien » hoc hien, hoc tieng, hoc vi
hoc viet » hoc hien
viet va » viet van, viet ha, tiet va

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 thiet qua dinh cua nguoi viet va ((hoc vien) OR (hoc viet)) nganh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh thiet qua dinh cua nguoi viet va ((hoc vien) OR (hoc viet)) nganh".
• Adding a wildcard symbol may retrieve word variants: giao trinh thiet qua dinh cua nguoi viet va ((hoc vien) OR (hoc viet)) nganh*.