Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tang » hanh trang, hanh mang, hanh tung
dong cong » duong cong, dang cong, cong cong
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
tac tren » rac tren, tai tren, tap tren
tren cau » tren ca, tren cay, tren tau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - ((hanh tang) or (anh tang)) cua ((dong cong) OR (dung cong)) tac tren cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh tang) OR (anh tang)) cua ((dong cong) OR (dung cong)) tac tren cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh tang) or (anh tang)) cua ((dong cong) OR (dung cong)) tac tren cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh tang) or (anh tang)) cua ((dong cong) OR (dung cong)) tac tren cau*.