Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
tu sach » thu sach, su sach, te sach
dan bac » dan ba, dong bac, gian bac
day dan » day danh, dao dan, cay dan
van hai » van ha, van chat, van hanh
cua tre » cua te, cuu tre, cua triet
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
dan de » dan den, dang de, van de
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 dan de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((((van bac) OR (dan bac))) OR (van hai)) thuc day dan 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 dan de cua tre*.