Perhaps you should try some spelling variations:
tranh thuat » trong thuat, tranh chua, tranh thai
thuat dung » thuat hung, thuat ung, thuat xung
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) OR (hieu manh)) - canh tranh thuat dung cong tan tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (hieu manh)) - canh tranh thuat dung cong tan tran cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (hieu manh)) - canh tranh thuat dung cong tan tran cau*.