Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung cap, dung cua
trong san » trong cac, cong san, dong san
san toan » van toan, dan toan, manh toan
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: ((doi chieu) or (hoc thieu)) sach - thanh ((trung cua) OR (trung tuan)) dung trong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) sach - thanh ((trung cua) OR (trung tuan)) dung trong san toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (hoc thieu)) sach - thanh ((trung cua) OR (trung tuan)) dung trong san toan cao*".