Perhaps you should try some spelling variations:
vu sach » vu bach, vu khach
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
su sach » so sach
ve cac » vien cac
vi cua » vai cua, di 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: ((vu sach) or (su sach)) ky lang ha noi. hieu ((ve cac) or (va cac)) truc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky lang ha noi. hieu ((ve cac) OR (va cac)) truc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ky lang ha noi. hieu ((ve cac) or (va cac)) truc va hanh vi cua te*.