Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
vat hanh » vat thanh, va hanh, nhat hanh
vu sach » vu bach, su sach, vu khach
ve cham » va cham, ve chat, vu cham
cuu tre » cua tre, cau tren, cau treo
sach v » sach va, sach y, sach 2
ve cam » ve cac, va cam, ve cai
v nang » va nang, vu nang, van nang
di cuu » di cau, di cua, dinh cuu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach v nang x hoi. hieu ((ve cam) or (ve cham)) thuc ((vat hanh) OR (van hanh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach v nang x hoi. hieu ((ve cam) OR (ve cham)) thuc ((vat hanh) OR (van hanh)) di cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach v nang x hoi. hieu ((ve cam) or (ve cham)) thuc ((vat hanh) OR (van hanh)) di cuu tre".
• Adding a wildcard symbol may retrieve word variants: vu sach v nang x hoi. hieu ((ve cam) or (ve cham)) thuc ((vat hanh) OR (van hanh)) di cuu tre*.