Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cham cuu » cap cuu, chat cua
ve thanh » le thanh, de thanh, den thanh
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
cuu ve » cuu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((nang xa) OR (nang ma)) hoi. hieu ve cham cuu ve thanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((nang xa) OR (nang ma)) hoi. hieu ve cham cuu ve thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) OR (nang ma)) hoi. hieu ve cham cuu ve thanh dai cua tre*.