Perhaps you should try some spelling variations:
tcanh tranh » thanh thanh, can tranh, lanh tranh
phuong dong » phuong dung, phuong hoang, chuong duong
hien tinh » khien tinh, thien tinh, bien tinh
va phuong » va thuong, cac phuong
dong van » duong van, dang van, dong von
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - ((canh tranh) or (tcanh tranh)) va phuong dong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - ((canh tranh) OR (tcanh tranh)) va phuong dong van tuan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - ((canh tranh) or (tcanh tranh)) va phuong dong van tuan ban*.