Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
trong thuong » trong tuong, cong thuong, dong thuong
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
tung lap » trung lap, dung lap, tuong lai
dam phan » d phan, va phan, van phan
phan cau » phan dau, phan cac, phan tu

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 xanh) OR (chieu xanh)) - thanh tung lap ((trong thuong) or (thong thuong)) dam phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - thanh tung lap ((trong thuong) OR (thong thuong)) dam phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - thanh tung lap ((trong thuong) or (thong thuong)) dam phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - thanh tung lap ((trong thuong) or (thong thuong)) dam phan cau*.