Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua phung » cua phuong, cua nhung, cua chung
van thanh » ban thanh, van tuan
toan ban » van 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 ((hieu manh) or (chieu sang)) - hanh tranh cua phung van thanh ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sang)) - hanh tranh cua phung van thanh ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (chieu sang)) - hanh tranh cua phung van thanh ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sang)) - hanh tranh cua phung van thanh ((toan tap) OR (toan ban))*.