Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
trong tinh » truong tinh, trong kinh, trong sinh
hoc thieu » hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
thang va » hang va, trang va, thong va
toan ban » van ban
va dung » van dung, va duong, vat dung

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