Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu xanh » chieu sach, chieu sang, chieu tinh
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tuong va » truong va, thuong va, luong va
tap quan » tac quan, hai quan
bai toan » bai tap

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 xanh - thanh tuong va ((hang cong) or (thong thong)) ((tap quan) or (bai toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh tuong va ((hang cong) OR (thong thong)) ((tap quan) OR (bai toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh tuong va ((hang cong) or (thong thong)) ((tap quan) or (bai toan)) cao*.