Perhaps you should try some spelling variations:
vuc nang » cuc nang, chuc nang, van nang
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
vu nang » va nang, vu dang, v nang
hieu ca » hieu cac, hieu cua, hieu va
ca nang » cam nang, cao nang, cua nang
luc van » luoc van, luu van, duc van
hanh ve » hanh vi, hanh va, hanh kem
ma hoi » mai hoi, xa hoi, ma hoa
ve su » va su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((vu nang) or (vuc nang)) ma hoi. hieu ca nang luc van hanh ve su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((vu nang) OR (vuc nang)) ma hoi. hieu ca nang luc van hanh ve su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((vu nang) or (vuc nang)) ma hoi. hieu ca nang luc van hanh ve su triet*.