Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
tranh vat » trinh vat, tranh va, tranh van
vat thong » va thong, vat trong, mat thong
van khang » van khanh, van thanh, van quang
luan phan » luan van, luan hoan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) OR (chieu sach)) - canh tranh vat thong cong ((van khang) or (luan phan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - canh tranh vat thong cong ((van khang) OR (luan phan)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sach)) - canh tranh vat thong cong ((van khang) or (luan phan)) cap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sach)) - canh tranh vat thong cong ((van khang) or (luan phan)) cap*.