Perhaps you should try some spelling variations:
day danh » day manh, dai danh, dao danh
thuc day » thuc dan, thuc vat
tu sach » thu sach, su sach, te sach
van hai » van ha, van chat, van hanh
danh de » hanh de, dan de, dang de
cua tre » cua te, cuu tre, cua triet
dan bac » dan ba, dong bac, gian bac
sach ty » sach y, sach tu, sach thu
van bac » van ban, van bao, van hac
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
de cua » le cua, te cua, dieu cua

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 ty nang xa hoi. hieu ((((van bac) OR (dan bac))) OR (van hai)) thuc day danh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu ((((van bac) OR (dan bac))) OR (van hai)) thuc day danh de cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((((van bac) OR (dan bac))) OR (van hai)) thuc day danh de cua tre*.