Perhaps you should try some spelling variations:
tranh tuan » tranh luan, thanh tuan, trang tuan
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (doi chieu)) xanh - canh ((tranh tuan) OR (tran tuan)) dung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) xanh - canh ((tranh tuan) OR (tran tuan)) dung cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chieu)) xanh - canh ((tranh tuan) OR (tran tuan)) dung cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - canh ((tranh tuan) OR (tran tuan)) dung cong san toan ban*.