Perhaps you should try some spelling variations:
thanh hoa » thanh pho
qua pham » quan pham, quy pham, qua cham
thanh ha » thanh hai, nhanh ha, thanh phan
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
duc van » duc va, duc tan, duc manh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu
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 ky nang x hoi. hieu qua pham duc van ((thanh ha) OR (thanh hoa)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu qua pham duc van ((thanh ha) OR (thanh hoa)) ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang x hoi. hieu qua pham duc van ((thanh ha) OR (thanh hoa)) ((cua tre) or (cua te))*".