Perhaps you should try some spelling variations:
luan phan » luan van, luan hoan
dinh luan » dinh xuan, binh luan, dinh duan
van dinh » van minh, van dich, va dinh
phan tre » phan tien, nhan tren, pham tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ve pham » vi pham, v pham, ve phat
ve phan » va phan, ke phan, ve phat
duc van » duc va, duc tan, duc manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ((ve pham) or (ve phan)) duc van dinh luan phan tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((ve pham) OR (ve phan)) duc van dinh luan phan tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((ve pham) or (ve phan)) duc van dinh luan phan tre*.