Perhaps you should try some spelling variations:
trinh phan » trinh han, trinh quan, thanh phan
thanh sung » thanh tung, thanh hung, thanh dung
nam trong » nam trung, cay trong
hoc dien » hoc hien, hoc vien, hoc dieu
dien anh » tieng anh, dien dan
sung nam » quang nam, dong nam
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dien anh - thanh sung nam trong cong trinh phan dau~.
• Adding a wildcard symbol may retrieve word variants: hoc dien anh - thanh sung nam trong cong trinh phan dau*.