Perhaps you should try some spelling variations:
trien nhan » trien nha, tri nhan, trien khai
thiet qua » thien quan, hieu qua, thien quy
vien quan » lien quan, van quan, tin quan
hoc trien » hoc tren, hoc tien, hoc truyen
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 ((thiet qua) or (vien quan)) dinh cua nguoi viet ha hoc trien nhan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh ((thiet qua) OR (vien quan)) dinh cua nguoi viet ha hoc trien nhan.
• Adding a wildcard symbol may retrieve word variants: giao trinh ((thiet qua) or (vien quan)) dinh cua nguoi viet ha hoc trien nhan*.