Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
cap phoi » cap cho
tu sach » thu sach, su sach, te sach
va chao » va cao, va chat, va cham
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
luu tre » luu tru, cuu tre, luy tre
xu va » xu van, tu va, su va

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 ((xay hoi) or (cap phoi)). hieu va chao xu va ((thanh vi) or (hanh vi)) luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((xay hoi) OR (cap phoi)). hieu va chao xu va ((thanh vi) OR (hanh vi)) luu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((xay hoi) or (cap phoi)). hieu va chao xu va ((thanh vi) or (hanh vi)) luu tre*.