Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
van luu » von luu, van lu, van luc
xuc ban » duc ban, cuc ban, quoc ban
luu tre » luu tru, cuu tre, luy tre
tay hoi » tay ho, tao hoi, tay thai
xay hoi » xa hoi, cay phoi, gay thoi
y nang » ky nang, ly nang, v nang
ve cam » ve cac, va cam, ve cai

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 ((xay hoi) OR (tay hoi)). hieu ((ve cam) or (ve cham)) xuc ban thanh van luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((xay hoi) OR (tay hoi)). hieu ((ve cam) OR (ve cham)) xuc ban thanh van luu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((xay hoi) OR (tay hoi)). hieu ((ve cam) or (ve cham)) xuc ban thanh van luu tre*".