Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan
thanh de » hanh de, thanh ve, thanh do
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va nam » van nam, ha nam, va nay
de cua » le cua, te cua, dieu cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang xa hoi. lieu va nam ((thuc dan) OR (thuc vat)) thanh de cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. lieu va nam ((thuc dan) OR (thuc vat)) thanh de cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. lieu va nam ((thuc dan) OR (thuc vat)) thanh de cua te*.