Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
vu nang » vuc nang, vu dang, v nang
va nang » van nang, da nang, cam nang
hieu cu » hieu cua, hieu ca, hieu su
cu nang » cuu nang, cua nang, cuc 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 (va nang)) ma hoi. hieu cu nang luc van hanh ve su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((vu nang) OR (va nang)) ma hoi. hieu cu nang luc van hanh ve su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((vu nang) OR (va nang)) ma hoi. hieu cu nang luc van hanh ve su triet*.