Perhaps you should try some spelling variations:
dang xay » dang van, van xay
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
cuu tre » cua tre, cau tren, cau treo
dai cuu » dai cua, dai huu
xuc van » duc van, luc van, vuc van
hieu va » hieu qua
lang ha » long ha
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((dang xay) or (lang ha)) hoi. ((hieu va) or (lieu va)) chat xuc van hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((dang xay) OR (lang ha)) hoi. ((hieu va) OR (lieu va)) chat xuc van hanh dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((dang xay) or (lang ha)) hoi. ((hieu va) or (lieu va)) chat xuc van hanh dai cuu tre*.