Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
hanh dai » hanh dao, vanh dai, thanh dam
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ve pham duc va ((((hanh dai) OR (thanh dat))) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve pham duc va ((((hanh dai) OR (thanh dat))) OR (hanh tai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ve pham duc va ((((hanh dai) OR (thanh dat))) or (hanh tai)) cua tre*".