Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
thai cua » than cua, tai cuc, tri cua
dang xay » dang van, van xay
va nhanh » va thanh, va hanh, va nhan
thu sai » thu hai, thu tai, thu san
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
lang xa » lang ha, lang van
sai ky » sac ky
cac lo » cac lop, cac co, cac bo
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sai ky ((dang xay) or (lang xa)) hoi. ((hieu va) or (hieu qua)) cac lo va nhanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sai ky ((dang xay) OR (lang xa)) hoi. ((hieu va) OR (hieu qua)) cac lo va nhanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sai ky ((dang xay) or (lang xa)) hoi. ((hieu va) or (hieu qua)) cac lo va nhanh thai cua tre*.