Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thieu sang » chieu sang, thieu khang, thieu quang
hanh trang » thanh trung, hanh trinh, minh trang
cua phuong » cuu phuong, cuc phuong, luan phuong
hoc thieu » toc thieu, hoc hien
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - ((hanh trang) or (canh tranh)) cua phuong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh trang) OR (canh tranh)) cua phuong cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh trang) or (canh tranh)) cua phuong cong tac toan cao*.