Perhaps you should try some spelling variations:
trinh tien » trinh tieng, trinh tin, trinh dien
tien quan » thien quan, tien quang, lien quan
hien phap » bien phap
danh cua » doanh cua, manh cua, dan cua
dinh cua » dinh cuu, sinh cua, dinh cu
viet ha » viet nam
ha hoc » hoa hoc, nha hoc, va hoc

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 tien quan ((danh cua) or (dinh cua)) nguoi viet ha hoc hien phap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh tien quan ((danh cua) OR (dinh cua)) nguoi viet ha hoc hien phap.
• Adding a wildcard symbol may retrieve word variants: giao trinh tien quan ((danh cua) or (dinh cua)) nguoi viet ha hoc hien phap*.