Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tieu xanh » tieu danh, chieu xanh, dieu hanh
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
tam toan » tap toan, tam than, pham toan
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: theo tieu xanh - hanh ((tang cua) or (tang luan)) ((nhung cong) OR (thong cong)) tam toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((tang cua) OR (tang luan)) ((nhung cong) OR (thong cong)) tam toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((tang cua) or (tang luan)) ((nhung cong) OR (thong cong)) tam toan tap".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((tang cua) or (tang luan)) ((nhung cong) OR (thong cong)) tam toan tap*.