Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
xang van » dang van, tang van, lang van
van lanh » van anh, van hanh, van manh
sach ty » sach y, sach tu, sach thu
cam luc » cam xuc
cau luc » cau truc, cau phuc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty xang van hoa. lieu va ((cam luc) OR (cau luc)) van lanh dao ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty xang van hoa. lieu va ((cam luc) OR (cau luc)) van lanh dao ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ty xang van hoa. lieu va ((cam luc) OR (cau luc)) van lanh dao ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty xang van hoa. lieu va ((cam luc) OR (cau luc)) van lanh dao ((cua tre) or (cuu tre))*.