Perhaps you should try some spelling variations:
phan tai » pham tai, nhan tai, phan thi
su cach » su sach, tu cach, cuu cach
hieu ve » hieu va, hieu van
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
su cac » tu cac, su cao, su can
ve cam » ve cham, ve cac, va cam
tai va » thai va, mai va, tri va
x hoi » xa hoi, o hoi, x ho
thiet » thieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su cach)) ky nang x hoi. hieu ve cam ((xuc van) OR (luc van)) phan tai va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) or (su cach)) ky nang x hoi. hieu ve cam ((xuc van) OR (luc van)) phan tai va thiet~".
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su cach)) ky nang x hoi. hieu ve cam ((xuc van) OR (luc van)) phan tai va thiet*.