Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky tang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
cac tac » cac toc, cac bac, cac dac
van vat » van chat, nhan vat
vat cua » mat cua, bat cua, dat cua
cua tre » cua te, cuu tre, cua triet
da van » dao van, dam van, va van

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) OR (tay lang))) or (ky dang)) xa hoi. hieu va cac tac da van vat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((((ky lang) OR (tay lang))) OR (ky dang)) xa hoi. hieu va cac tac da van vat cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((((ky lang) OR (tay lang))) or (ky dang)) xa hoi. hieu va cac tac da van vat cua tre*".