Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
sach thu » sach thue, sach thieu, sach tham
thu dung » thuy dung, thuc dung, thu dang
vien cua » viec cua, dien cua, tien cua
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
dung ha » dung va, dung he, dung khoa
ve cam » ve cac, va cam, ve cai
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
ha hoi » hoa hoi, ha noi, xa hoi
cua cu » cua chu, cua cau, cua 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 thu dung ha hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) or (luc va)) thanh vien cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu dung ha hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) OR (luc va)) thanh vien cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu dung ha hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) or (luc va)) thanh vien cua cu".
• Adding a wildcard symbol may retrieve word variants: su sach thu dung ha hoi. hieu ((ve cam) OR (ve cham)) ((xuc va) or (luc va)) thanh vien cua cu*.