Perhaps you should try some spelling variations:
phuong thong » phuong trong, thong thong, phuong hoang
luan phuong » lan phuong, quang phuong, doan phuong
chieu sach » chinh sach, chiet tach, chieu sang
thong than » thong thanh, thong phan, thong nhan
hanh dung » thanh dung, anh dung, hanh dong
than van » thanh van, tran van, phan van
hieu ca » hieu cac, hieu cua, hieu va
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu sach) or (hieu ca)) - hanh dung luan phuong thong than van tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu sach) OR (hieu ca)) - hanh dung luan phuong thong than van tai*.