Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh hanh » thanh thanh, thanh anh, thanh hang
bang cong » dang cong, bang song, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
hanh va » hang va, hanh vi
va bang » va nang, va lang, va ban

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 - thanh hanh va bang cong tan ((((toan cao) OR (toan tap))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh hanh va bang cong tan ((((toan cao) OR (toan tap))) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh hanh va bang cong tan ((((toan cao) OR (toan tap))) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh hanh va bang cong tan ((((toan cao) OR (toan tap))) or (toan ban))*.