Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
luat dung » suat dung, luat chung, thuat dung
dung cong » dung trong
tap quan » tac quan
hai quan » tac quan

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 trinh luat dung cong ((tap quan) OR (hai quan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - hanh trinh luat dung cong ((tap quan) OR (hai quan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh trinh luat dung cong ((tap quan) OR (hai quan)) cao*.