Perhaps you should try some spelling variations:
luoc van » luoc can, luoc va, luc van
van hanh » van thanh, ban hanh, van anh
nang ma » tang ma, sang ma, nang cao
ve khai » ke khai, va khai, ve khoi
luu tre » luu tru, cuu tre, luy tre
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang ma hoi. hieu ((ve khai) or (va khao)) luoc van hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ma hoi. hieu ((ve khai) OR (va khao)) luoc van hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ma hoi. hieu ((ve khai) or (va khao)) luoc van hanh vi luu tre*.