Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
cong manh » cong danh, duong manh, cong thanh
ho chieu » theo chieu, hoc thieu, doi chieu
vat dung » van dung, viet dung, mat duong
toan cao » toan tap
toan ban » van ban
va dung » van dung, va duong, va ung

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 - thanh trung ((va dung) or (vat dung)) cong manh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh trung ((va dung) OR (vat dung)) cong manh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh trung ((va dung) or (vat dung)) cong manh ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trung ((va dung) or (vat dung)) cong manh ((toan cao) OR (toan ban))*.