Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
tranh va » tranh van, trang va, trinh va
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu xanh - hanh tranh va ((thong cong) or (dung trong)) dan ((phan cau) OR (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh tranh va ((thong cong) OR (dung trong)) dan ((phan cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh tranh va ((thong cong) or (dung trong)) dan ((phan cau) OR (phan cac))".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh tranh va ((thong cong) or (dung trong)) dan ((phan cau) OR (phan cac))*.