Perhaps you should try some spelling variations:
lang chai » lang ha, lang cua, lang phi
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
chai cua » chat cua, thai cua, chi cua
quoc ban » quoc bao, quoc lan, quoc quan
cua tre » cua te, cuu tre, cua triet
xuc ban » duc ban, cuc ban, xuat ban
ky dang » ky nang, ky danh
tu san » thu san, tu ban, tu can
va cam » va cham, va cac, va cao
san ky » sang ky, van ky, dan ky
ve cam » ve cham, ve cac, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky dang cay phoi. hieu ((ve cam) or (va cam)) ((xuc ban) OR (quoc ban)) lang chai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky dang cay phoi. hieu ((ve cam) OR (va cam)) ((xuc ban) OR (quoc ban)) lang chai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky dang cay phoi. hieu ((ve cam) or (va cam)) ((xuc ban) OR (quoc ban)) lang chai cua tre*".