Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
hanh voi » hanh vi, hanh noi, hanh moi
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
vu sach » vu bach, vu khach
ve cam » ve cham, ve cac, va cam
voi su » voi suc, oi su, vi su
x hoi » xa hoi, o hoi, x ho

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 (vu sach))) or (so sach)) ky nang x hoi. hieu ve cam tuc van hanh voi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((su sach) OR (vu sach))) OR (so sach)) ky nang x hoi. hieu ve cam tuc van hanh voi su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((su sach) OR (vu sach))) or (so sach)) ky nang x hoi. hieu ve cam tuc van hanh voi su triet*".