Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cuu » thai cua, tai cuc, thi cuc
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
cuu tre » cua tre, cau tren, cau treo
duc van » duc va, duc tan, duc manh
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
su dai » sau dai, si dai, su tai
su mai » su tai, su hai, tu mai
su sai » su tai, su hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((su sai) or (su mai))) or (su dai)) ky dang xay hoi. hieu ve pham duc van hanh thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((su sai) OR (su mai))) OR (su dai)) ky dang xay hoi. hieu ve pham duc van hanh thai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((((su sai) or (su mai))) or (su dai)) ky dang xay hoi. hieu ve pham duc van hanh thai cuu tre*.