Perhaps you should try some spelling variations:
xach tay » canh tay
sach ky » sac ky, sach ty, sach kem
va hanh » van hanh, va thanh, va danh
cao luc » bao luc, cao duc, cao suc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
va cao » va cac, va co, va dao
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
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: tu ((((sach ky) OR (sach y))) OR (xach tay)) nang ma hoi. hieu va cao luc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach ky) OR (sach y))) OR (xach tay)) nang ma hoi. hieu va cao luc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ky) OR (sach y))) OR (xach tay)) nang ma hoi. hieu va cao luc va hanh vi cua tre*.