Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, phong chong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
chinh ca » chinh ta, chinh tai, chinh cho
chinh va » chinh ta, chinh tai, hanh va
tan ran » tan tran, tan van, tan san
ran cau » van cau, ban cau, can cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh ((chinh ca) OR (chinh va)) ((thong cong) OR (thong thong)) tan ran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - hanh ((chinh ca) OR (chinh va)) ((thong cong) or (thong thong)) tan ran cau~".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh ((chinh ca) OR (chinh va)) ((thong cong) or (thong thong)) tan ran cau*.