Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh van » trinh han, trinh quan, trinh toan
van nhung » van nhuong, va nhung, van hung
cong lang » cong vang, cong luong, cong quang
than cao » thai cao, than cap, than sao
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: toc ((thieu xanh) or (hieu manh)) - canh trinh van nhung cong lang ((than cao) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (hieu manh)) - canh trinh van nhung cong lang ((than cao) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu xanh) or (hieu manh)) - canh trinh van nhung cong lang ((than cao) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu xanh) or (hieu manh)) - canh trinh van nhung cong lang ((than cao) OR (toan cao))*.