Perhaps you should try some spelling variations:
doanh luan » doanh nhan
tranh cua » doanh cua, manh cua
thong dan » thong van, tuong dan, thong den
theo thu » theo chu, theo tu, theo tieu
thu sach » tu sach, thuat sach, thuoc sach
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo thu sach - canh ((tranh cua) or (doanh luan)) thong thong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo thu sach - canh ((tranh cua) OR (doanh luan)) thong thong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: theo thu sach - canh ((tranh cua) or (doanh luan)) thong thong dan chan cau*.