Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
toan cua » than cua, tan cua, doanh cua
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
van cau » van dau, van hau, van chat
va cau » va cac, va dau, va cao
luc va » duc va, tuc va, loc va
cua te » cua tu

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 ty nang ma hoa. hieu ((va cau) OR (van cau)) luc va thanh toan cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang ma hoa. hieu ((va cau) OR (van cau)) luc va thanh toan cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ma hoa. hieu ((va cau) OR (van cau)) luc va thanh toan cua te*.