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
hanh cong » thanh cong, hang cong, hanh dong
anh cong » anh dong, thanh cong, manh cuong
dan toan » van toan, dan than, manh 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 trinh luat ((anh cong) OR (hanh cong)) dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - hanh trinh luat ((anh cong) OR (hanh cong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh trinh luat ((anh cong) OR (hanh cong)) dan toan cao*.