Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, thong thanh
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh dung » thanh duong, thanh tung, thanh hung
rong thanh » dong thanh, cong thanh, truong thanh
dung van » duong van, dung va, dang van
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: hoc ((thieu xanh) OR (chieu xanh)) - thanh dung van dong ((trong thanh) or (rong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - thanh dung van dong ((trong thanh) OR (rong thanh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - thanh dung van dong ((trong thanh) or (rong thanh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - thanh dung van dong ((trong thanh) or (rong thanh)) toan tap*.