Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, nhanh thanh
lanh tranh » canh tranh, lan tranh, sach tranh
hanh trinh » canh tranh, hanh chinh
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
khi xanh » khia canh, thi hanh, thi anh
van dung » van dong, xay dung, tin dung
toan ban » van ban

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

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