Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, hanh trinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac dac » cac dan, cac dai, cac bac
dac van » cac van, dao van, dam van
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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 lang xa hoi. hieu ve cac dac van ((than kinh) or (thanh tinh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu ve cac dac van ((than kinh) OR (thanh tinh)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu ve cac dac van ((than kinh) or (thanh tinh)) cua tre*.