Perhaps you should try some spelling variations:
trinh nghien » trinh nghe, kinh nghiem, trinh thiet
nghien quy » nghiep quy, nghien cuu, thien quy
vien nhan » dien nhan, vien than, trien nhan
quy manh » quy thanh, quy dinh, suc manh
manh cua » doanh cua, ban cua
hoc vien » hoc hien, hoc viet, hoc tieng
viet va » viet van, viet ha, tiet va
va hoc » van 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 nghien quy manh cua nguoi viet va hoc vien nhan~.
• Adding a wildcard symbol may retrieve word variants: giao trinh nghien quy manh cua nguoi viet va hoc vien nhan*.