Perhaps you should try some spelling variations:
tranh nghien » trinh nghien, tron nghien, trong nghien
lanh tranh » canh tranh, lan tranh, hanh trinh
nghien van » nghiem van, nghiep van, nguyen van
sach tran » sach tranh, sach tren, vach tran
tran hien » trang kien, thanh hien, tran viet
su lanh » su anh, tu lanh, su thanh
van hoc » van hoa
tu sach » thu sach, su sach, te sach
hien tu » khien tu, dien tu
tu hoc » te hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su lanh tranh nghien van hoc ) or ( tu sach tran hien tu hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su lanh tranh nghien van hoc ) OR ( tu sach tran hien tu hoc ))*.