Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
vu sach » vu bach, vu khach
va chai » va cai, va chat, va cham
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach
cua tre » cua te, cuu tre, cua triet
cuc va » chuc va, duc va, cuu va
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (su sach)) ty nang xa hoi. lieu va chai ((cuc va) or (cuu van)) thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ty nang xa hoi. lieu va chai ((cuc va) OR (cuu van)) thanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ty nang xa hoi. lieu va chai ((cuc va) or (cuu van)) thanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) ty nang xa hoi. lieu va chai ((cuc va) or (cuu van)) thanh ve cua tre*.