Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
qua cac » cua cac
hanh di » hanh vi, hanh de, hang di
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu qua cac ((luc va) or (thuc dan)) hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu qua cac ((luc va) OR (thuc dan)) hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu qua cac ((luc va) or (thuc dan)) hanh di cua te*.