Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
san hanh » san thanh, ban hanh, van hanh
van cham » van chat, van tham, van pham
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
cuu san » cuu van, cua san, cuu ban
nang xa » nang x, nang ma, mang xa
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
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 ((nang xa) or (lang xa)) hoi. hieu ((van cham) or (va cham)) cuu san hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (lang xa)) hoi. hieu ((van cham) OR (va cham)) cuu san hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (lang xa)) hoi. hieu ((van cham) or (va cham)) cuu san hanh vi cua viet*.