Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
thanh thai » thanh hai, thanh tai, thanh thao
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
van cam » van nam, van lam, van cau
nang xa » lang xa, nang ma, mang xa
xuc ban » duc ban, cuc ban, quoc ban
sai ky » sac ky
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky ((nang xa) OR (nang x)) hoi. hieu van cam xuc ban ((thanh thai) or (nhanh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((nang xa) OR (nang x)) hoi. hieu van cam xuc ban ((thanh thai) OR (nhanh thai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((nang xa) OR (nang x)) hoi. hieu van cam xuc ban ((thanh thai) or (nhanh thai)) cua tre*".