Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
xa thanh » va thanh, ha thanh, ta thanh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cac tuc » cac tu, cac tac, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
hoi cua » hoi chuc
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ky nang ma hoi. hieu va ((cac tuc) OR (cac toc)) xa thanh hoi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang ma hoi. hieu va ((cac tuc) OR (cac toc)) xa thanh hoi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ma hoi. hieu va ((cac tuc) OR (cac toc)) xa thanh hoi cua tre*.