Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
nhiet nang » nhiet dong, viet nang, nhieu tang
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, phong chong
thanh he » thanh hue, thanh ha, thanh ve
bai toan » bai tap
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((nhiet nang) or (chieu xanh)) - thanh thanh he ((thong cong) OR (thong thong)) bai toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhiet nang) OR (chieu xanh)) - thanh thanh he ((thong cong) OR (thong thong)) bai toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((nhiet nang) or (chieu xanh)) - thanh thanh he ((thong cong) OR (thong thong)) bai toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((nhiet nang) or (chieu xanh)) - thanh thanh he ((thong cong) OR (thong thong)) bai toan tap*.