Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trang » thanh trung, hanh trinh, minh trang
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
thang cap » thong cap, than cap, hang ca
trung cap » truong cao, trung tam
cong van » cong vang, cong san, song 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 thieu sang - ((canh tranh) or (hanh trang)) cua thong cong van ((thang cap) OR (trung cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((canh tranh) OR (hanh trang)) cua thong cong van ((thang cap) OR (trung cap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((canh tranh) or (hanh trang)) cua thong cong van ((thang cap) OR (trung cap))*".