Perhaps you should try some spelling variations:
tao bang » cao bang, tao ban, thai bang
bang cau » hang cau, bang cac, nang cao
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, vu khach
vuc van » duc van, luc van, thuc van
cua tre » cua te, cua triet, dua tren
hanh va » hang va, hanh vi
cam vuc » cam xuc
su sach » so sach
cuu tre » cau tren, cau treo
va cam » va cham, va cac, va cao

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)) tao bang cau hoi. lieu va cam vuc van hanh va ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) tao bang cau hoi. lieu va cam vuc van hanh va ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) tao bang cau hoi. lieu va cam vuc van hanh va ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) tao bang cau hoi. lieu va cam vuc van hanh va ((cua tre) or (cuu tre))*.