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 » vu sach
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
hanh ki » hanh vi, hanh ky, hanh kien
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
ki su » ky 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) or (so sach)) ky nang ma hoi. hieu ve cam xuc van hanh ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang ma hoi. hieu ve cam xuc van hanh ki su triet*.