Perhaps you should try some spelling variations:
chat truc » chat xuc
hieu cao » chieu cao, hieu cac, hieu ca
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
danh di » xanh di, danh dien, danh gia
danh du » danh dau, danh tu, dinh du
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: tu sach ky nang xa hoi. hieu cao ((chat truc) or (cau truc)) va ((danh di) OR (danh du)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu cao ((chat truc) OR (cau truc)) va ((danh di) OR (danh du)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu cao ((chat truc) or (cau truc)) va ((danh di) OR (danh du)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu cao ((chat truc) or (cau truc)) va ((danh di) OR (danh du)) cua tre*.