Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
dung cong » dung trong
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
manh cua » doanh cua
phan dau » phan tu, hang dau
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu xanh) OR (thien anh)) - canh ((manh cua) or (ban cua)) dung cong toan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (thien anh)) - canh ((manh cua) OR (ban cua)) dung cong toan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu xanh) OR (thien anh)) - canh ((manh cua) or (ban cua)) dung cong toan phan dau".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu xanh) OR (thien anh)) - canh ((manh cua) or (ban cua)) dung cong toan phan dau*.