Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh lang » thanh long, nhanh lang, thanh hang
van truong » tang truong, xuan truong, vien truong
hanh luan » khanh luan, hang luan, hanh luat
cong lang » cong vang, cong luong, cong quang
cong van » cong vang, cong san, song van
tuan cu » tuan tu, quan cua, tuan thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien thanh lang - hanh luan van truong ((cong van) or (cong lang)) tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien thanh lang - hanh luan van truong ((cong van) OR (cong lang)) tuan cu.
• Adding a wildcard symbol may retrieve word variants: thien thanh lang - hanh luan van truong ((cong van) or (cong lang)) tuan cu*.