Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
dung phuong » dung thuong, bang phuong, dung chung
hanh thong » anh thong, hanh trong, hang thong
chieu sang » chieu sach, chieu xanh, hieu lang
thong qua » thong quan, thong cua, thong tu
qua dung » quang dung, su dung, qua song
doan van » doan va, hoang van, luan van
va tinh » may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (va tinh)) - hanh thong qua dung phuong doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (va tinh)) - hanh thong qua dung phuong doan van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (va tinh)) - hanh thong qua dung phuong doan van ban*.