Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh xuan » trinh quan, trinh luan, trinh luat
xuan thong » xuat thong, xuan thang, xuan truong
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
thong tan » thong than, thong tran, thong tin
toan ban » van ban
toan cao » toan tap

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 trinh xuan thong thong tan ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu manh)) - canh trinh xuan thong thong tan ((toan ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu manh)) - canh trinh xuan thong thong tan ((toan ban) or (toan cao))*.