Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
tranh cua » doanh cua, manh cua
dung cong » dung trong
cong toan » cong tan, cong hoan, cong tuan
cua dung » cua dang, cua dong, qua dung
phan dau » hang dau

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)) - canh tranh cua dung cong toan ((phan tu) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu tinh)) - canh tranh cua dung cong toan ((phan tu) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu tinh)) - canh tranh cua dung cong toan ((phan tu) OR (phan dau))*.