Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
den thanh » de thanh, dinh thanh, dong thanh
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
ve cham » ve chat, ve chim, viet cham
sach ty » sach y, sach tu, sach thu
vu cham » vu kham, tu cham, qua cham
cau den » cap den, cau de, hau den
va cham » va chat, va tham
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang x hoi. hieu ((ve cham) or (((vu cham) or (va cham)))) cau den thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu ((ve cham) OR (((vu cham) OR (va cham)))) cau den thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. hieu ((ve cham) or (((vu cham) or (va cham)))) cau den thanh dai cua te*.