Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, canh tinh, anh trinh
hanh trinh » canh tranh, hanh chinh
dung cong » dung trong
lang thai » lang chai, dang thai, hoang thai
van dung » van dong, xay dung, tin dung
lang hai » lang chai, lang ha, hang hai

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

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