Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh doi » thanh doi, hanh noi, hang doi
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
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: thuat sach ty nang xa hoi. ((lieu va) or (hieu qua)) pham duc va hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang xa hoi. ((lieu va) OR (hieu qua)) pham duc va hanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ty nang xa hoi. ((lieu va) or (hieu qua)) pham duc va hanh doi cua tre*.