Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
ky dinh » ky sinh, ky danh, ky kinh
luc van » luoc van, luu van, duc van
cua tre » cua te, cua triet, dua tren
cam luc » cam xuc, cau luc
dinh xa » dinh ba, dinh va, dinh xu
hieu va » lieu va, hieu qua
hieu ve » hieu van
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky dinh xa hoi. ((hieu ve) or (hieu va)) cam luc van hanh hai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky dinh xa hoi. ((hieu ve) OR (hieu va)) cam luc van hanh hai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky dinh xa hoi. ((hieu ve) or (hieu va)) cam luc van hanh hai ((cua tre) or (cuu tre))*.