Perhaps you should try some spelling variations:
quang hanh » quang thanh, quang khanh, quan hanh
doi chieu » doc hieu, doi chi, mot chieu
canh tinh » hanh tinh, manh tinh, nhanh tinh
hanh dong » anh dong, ha dong
dong toan » dung toan, bong toan, cong toan
ho chieu » theo chieu, hoc thieu, mot chieu
toan ban » van ban
ban dau » bat dau, ban dan, van dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (ho chieu)) tinh - ((canh tinh) or (canh tranh)) quang hanh dong toan ban dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) tinh - ((canh tinh) OR (canh tranh)) quang hanh dong toan ban dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) tinh - ((canh tinh) or (canh tranh)) quang hanh dong toan ban dau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) tinh - ((canh tinh) or (canh tranh)) quang hanh dong toan ban dau*.