Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
da thanh » dao thanh, dat thanh, dam thanh
nam thuc » nam thuoc, nam thu, nam tu
su sach » vu sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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) OR (so sach)) ty nang xa hoi. hieu ve ((nam thuc) or (am thuc)) da thanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang xa hoi. hieu ve ((nam thuc) OR (am thuc)) da thanh va cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang xa hoi. hieu ve ((nam thuc) or (am thuc)) da thanh va cuu tre*".