Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cham duc » pham duc, cham soc, pham duy
thai cua » than cua, tai cuc, tri cua
lang ha » long ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
bai ky » ban ky, sai ky, dai ky
bac ky » cac ky, ban ky, sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((bai ky) OR (bac ky)) lang ha noi. hieu va cham duc va hanh thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bai ky) OR (bac ky)) lang ha noi. hieu va cham duc va hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((bai ky) OR (bac ky)) lang ha noi. hieu va cham duc va hanh thai cua tre*.