Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tu cach » tu cac
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thuat sach)) ky nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuat sach)) ky nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thuat sach)) ky nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuat sach)) ky nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi cua tre*.