Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cac chat » cao chat, cac thuat, cac nha
xuc van » duc van, luc van, vuc van
su sach » so sach, vu sach
ca chat » cao chat, va chat, ca cham
y nang » ky nang, ly nang, v nang
lam va » nam va, lam ha, am va
dam va » dam van, nam va, dam ha
x hoi » xa hoi, o hoi, x ho
thiet » thieu

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 y nang x hoi. hieu ((ca chat) OR (cac chat)) xuc van thanh ((lam va) or (dam va)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x hoi. hieu ((ca chat) OR (cac chat)) xuc van thanh ((lam va) OR (dam va)) thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang x hoi. hieu ((ca chat) OR (cac chat)) xuc van thanh ((lam va) or (dam va)) thiet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. hieu ((ca chat) OR (cac chat)) xuc van thanh ((lam va) or (dam va)) thiet*.