Perhaps you should try some spelling variations:
hanh vinh » thanh vinh, khanh vinh, hanh tinh
vinh cuu » dinh cuu, sinh cua, dinh cu
qua chau » quy chau, qua cham, qua chu
te sach » toc sach
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
tay hoi » tay ho, tao hoi, tay thai
xay hoi » xa hoi, cay phoi, gay thoi
ky dang » ky nang, ky danh
au va » dau va, lau va, cau va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu hoach)) ky dang ((xay hoi) or (tay hoi)). hieu qua chau au va hanh vinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu hoach)) ky dang ((xay hoi) OR (tay hoi)). hieu qua chau au va hanh vinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu hoach)) ky dang ((xay hoi) or (tay hoi)). hieu qua chau au va hanh vinh cuu tre*.