Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
sach loai » sach bai, cac loai, sach doi
loai nang » loai nam, luan nang, loai san
cau tren » cu tren, dau tren, ca tren
ve cham » va cham, ve chat, vu cham
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
ve cam » ve cac, va cam, ve cai
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach loai nang ma hoi. hieu ((ve cam) OR (ve cham)) xuc va ((thanh vien) or (hanh vi)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach loai nang ma hoi. hieu ((ve cam) OR (ve cham)) xuc va ((thanh vien) OR (hanh vi)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach loai nang ma hoi. hieu ((ve cam) OR (ve cham)) xuc va ((thanh vien) or (hanh vi)) cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach loai nang ma hoi. hieu ((ve cam) OR (ve cham)) xuc va ((thanh vien) or (hanh vi)) cau tren*.