Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cuu tre » cua tre, cau tren, cau treo
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
luc van » luoc van, luu van, duc van
cua tu » cua tuc, cua su, cua cu
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

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 sang ma hoi. hieu ((ve cam) or (va cac)) luc van hanh vi ((cua tu) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky sang ma hoi. hieu ((ve cam) OR (va cac)) luc van hanh vi ((cua tu) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu san ky sang ma hoi. hieu ((ve cam) or (va cac)) luc van hanh vi ((cua tu) or (cuu tre))*.