Perhaps you should try some spelling variations:
thanh thuc » thanh thuy, nhanh thuc, thach thuc
van thanh » ban thanh, van tuan
day nhanh » day thanh, duy nhanh, dac nhan
dao hanh » dao thanh, dang hanh, ban hanh
hieu van » hieu va, thien van, lieu va
cuu tre » cua tre, cau tren, cau treo
sach ky » sach y, sach ty, sach kem
sac ky » cac ky, sai ky
de cuu » de cua
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) OR (sac ky)) nang x hoi. hieu van thanh thuc ((dao hanh) or (day nhanh)) de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sac ky)) nang x hoi. hieu van thanh thuc ((dao hanh) OR (day nhanh)) de cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sac ky)) nang x hoi. hieu van thanh thuc ((dao hanh) or (day nhanh)) de cuu tre".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sac ky)) nang x hoi. hieu van thanh thuc ((dao hanh) or (day nhanh)) de cuu tre*.