Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
hanh di » hanh vi, hanh de, hang di
sang ky » sang kyo, dang ky, tang ky
tu sang » thu sang, tu san, tu lang
lang ha » long ha
lang xa » dang xay, lang van
va cao » va cac, va co, va dao
di cua » dai cua, doi cua, de cua
va cam » va cham, va cac, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sang ky ((lang xa) or (lang ha)) hoi. hieu ((va cam) OR (va cao)) luoc van hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky ((lang xa) OR (lang ha)) hoi. hieu ((va cam) OR (va cao)) luoc van hanh di cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sang ky ((lang xa) or (lang ha)) hoi. hieu ((va cam) OR (va cao)) luoc van hanh di cua viet*".