Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
lang van » dang van, tang van, hoang van
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, cua triet
tai cua » thai cua, tai cuc, tri cua
cau xuc » cam xuc, cau luc, cau truc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay
xac ky » cac ky, bac ky
va cau » van cau, va cac, va dau
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((xac ky) or (sac ky)) ((lang xa) OR (lang van)) hoi. hieu va cau xuc va thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((xac ky) OR (sac ky)) ((lang xa) OR (lang van)) hoi. hieu va cau xuc va thanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((xac ky) or (sac ky)) ((lang xa) OR (lang van)) hoi. hieu va cau xuc va thanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((xac ky) or (sac ky)) ((lang xa) OR (lang van)) hoi. hieu va cau xuc va thanh tai cua tre*.