Perhaps you should try some spelling variations:
hanh trinh » canh tranh
chieu xanh » chieu sach, chieu sang, chieu tinh
luat nhung » luat chung, luat thuong, thuat nhung
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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