Perhaps you should try some spelling variations:
thong phuong » thuong phuong, thong thuong, thong huong
phuong doan » phuong loan, phuong hoang, huong dan
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » thanh trung, canh tranh, hanh trinh
hien hanh » dieu hanh
trang cua » tranh cua, tang cua, trung cua
cua thong » cua thuong, cua khong, cua tong
doan van » doan va, hoang van, luan van

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

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