Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
toc sach » doc sach, thuoc sach, nuoc sach
va triet » va thiet, va trien, ve triet
hoc sach » hoc sinh, hoc cac, hoc anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
thuc va » thuc vat, thuc dan, thuc day
toan va » doan va, tran van, toan ban
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) ky lang xa hoi. lieu va cam ((luc va) or (thuc va)) thanh toan va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky lang xa hoi. lieu va cam ((luc va) OR (thuc va)) thanh toan va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) ky lang xa hoi. lieu va cam ((luc va) or (thuc va)) thanh toan va triet".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) ky lang xa hoi. lieu va cam ((luc va) or (thuc va)) thanh toan va triet*.