Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
chinh sua » chinh su, chinh cua, chinh luan
dang nong » dang cong, hang nong, tang nong
manh toan » thanh toan, anh tuan, tinh toan
sua dang » su dang, cua dang, sua nang
san toan » van toan, dan toan, xuan toan
doi chi » doi khi

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 chi)) sach - hanh chinh sua dang nong ((san toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chi)) sach - hanh chinh sua dang nong ((san toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chi)) sach - hanh chinh sua dang nong ((san toan) or (manh toan)) cau*.