Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thu sach » tu sach, thuat sach, thuoc sach
toan cua » than cua, tan cua, doanh cua
nang mai » nang ma, nang tai, lang mai
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang mai hoi. hieu ((ve cam) or (va cham)) ((xuc va) or (tuc va)) thanh toan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang mai hoi. hieu ((ve cam) OR (va cham)) ((xuc va) OR (tuc va)) thanh toan cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang mai hoi. hieu ((ve cam) or (va cham)) ((xuc va) or (tuc va)) thanh toan cua tre*.