Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
lang chai » lang ha, lang cua, lang phi
van dung » van dong, xay dung, tin dung
lang hai » lang thai, 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 van dung cong ((lang chai) or (lang hai)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - canh trinh van dung cong ((lang chai) OR (lang hai)) cao.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - canh trinh van dung cong ((lang chai) or (lang hai)) cao*.