Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
doi cua » dai cua, hoi cua, dong cua
xuc van » duc van, luc van, xuc ban
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
san ky » sang ky, van ky, ban ky
va cam » va cham, va cac, va cao
dan ky » van ky
de cua » le cua, te cua, dieu cua

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) or (dan ky)) lang xa hoi. hieu va cam xuc van hanh ((doi cua) or (de cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (dan ky)) lang xa hoi. hieu va cam xuc van hanh ((doi cua) OR (de cua)) triet.
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) lang xa hoi. hieu va cam xuc van hanh ((doi cua) or (de cua)) triet*.