Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cua hang » cua dang, cua nhung, cua cong
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
khan cap » khan ap, than cap, khoan cam

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 (hanh trinh)) cua hang ((cong ban) or (cong san)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh trang) OR (hanh trinh)) cua hang ((cong ban) OR (cong san)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((hanh trang) OR (hanh trinh)) cua hang ((cong ban) or (cong san)) khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh trang) OR (hanh trinh)) cua hang ((cong ban) or (cong san)) khan cap*.