Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
mang cua » manh cua, dung cua, ban cua
dan toan » van toan, dan than, manh toan
toan tap » toan ban
cach » cac, sach

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 tinh)) - cach mang cua ((hang cong) or (bang cong)) dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu tinh)) - cach mang cua ((hang cong) OR (bang cong)) dan toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu tinh)) - cach mang cua ((hang cong) or (bang cong)) dan toan tap*.