Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
tuong cua » truong cua, huong cua, thong cua
dang cong » dung cong
dan cong » van cong, dan dong, ban cong
toan tai » toan tap, doanh tai, toan ban
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: theo chieu sang - thanh tuong cua ((dan cong) OR (dang cong)) tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh tuong cua ((dan cong) OR (dang cong)) tan ((toan tai) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - thanh tuong cua ((dan cong) OR (dang cong)) tan ((toan tai) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh tuong cua ((dan cong) OR (dang cong)) tan ((toan tai) or (toan cao))*.