Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thieu sang » chieu sang, thieu khang, thieu quang
hanh trinh » hanh chinh
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - ((hanh trinh) OR (canh tranh)) cua nhung phuong ((dan than) or (ban than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh trinh) OR (canh tranh)) cua nhung phuong ((dan than) OR (ban than)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((hanh trinh) OR (canh tranh)) cua nhung phuong ((dan than) or (ban than)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh trinh) OR (canh tranh)) cua nhung phuong ((dan than) or (ban than)) ban*.