Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh da » hanh dao, hanh dua, hanh va
cau tra » ca tra, cau ra, cau truc
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
da cau » dat cau, va cau

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 xa) or (nang ma))) or (van xay)) hoi. hieu va cam xuc va hanh da cau tra~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((((nang xa) OR (nang ma))) OR (van xay)) hoi. hieu va cam xuc va hanh da cau tra.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((((nang xa) or (nang ma))) or (van xay)) hoi. hieu va cam xuc va hanh da cau tra*.