Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
vien cac » vien bach, vien dai, vien da
su sach » so sach, vu sach
ve cac » va cac
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va
loc va » hoc va
va cua » va chua, via cua, ca cua
cua te » cua tu

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 ho. hieu ((ve cac) or (vien cac)) ((luc va) OR (loc va)) thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x ho. hieu ((ve cac) OR (vien cac)) ((luc va) OR (loc va)) thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang x ho. hieu ((ve cac) or (vien cac)) ((luc va) OR (loc va)) thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: su sach y nang x ho. hieu ((ve cac) or (vien cac)) ((luc va) OR (loc va)) thanh va cua te*.