Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hang huong » hang thuong, hang luong, hoang phuong
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
trinh va » trinh van, trinh vat, trinh ve
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (hoc thieu)) xanh - canh trinh va hang huong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc thieu)) xanh - canh trinh va hang huong dan than tap.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) xanh - canh trinh va hang huong dan than tap*.