Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
duc van » duc va, duc tan, duc manh
danh ca » dan ca, doanh cua, danh cho
xuc ban » duc ban, cuc ban, quoc ban
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cac » va cac, vien cac
anh ca » anh cam, anh cua, sanh ca

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 ty nang xa hoi. hieu ve cac ((duc van) or (xuc ban)) ((anh ca) OR (danh ca)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ve cac ((duc van) OR (xuc ban)) ((anh ca) OR (danh ca)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu ve cac ((duc van) or (xuc ban)) ((anh ca) OR (danh ca)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ve cac ((duc van) or (xuc ban)) ((anh ca) OR (danh ca)) cua tre*.