Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
toc sach » doc sach, thuoc sach, nuoc sach
pham cuc » pham chuc, pham duc, pham cua
qua pham » quan pham, quy pham, qua cham
lang van » dang van, tang van, hoang van
hoc sach » hoc sinh, hoc cac, hoc anh
nang xa » nang x, lang xa, nang ma
cuc ban » cua ban, cac ban, cuu ban
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) or (hoc sach)) ty ((nang xa) or (lang van)) hoi. hieu qua pham cuc ban thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ty ((nang xa) OR (lang van)) hoi. hieu qua pham cuc ban thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) ty ((nang xa) or (lang van)) hoi. hieu qua pham cuc ban thanh dai cua te*.