Perhaps you should try some spelling variations:
sinh thai » dinh thi
hanh thai » nhanh thai, hinh thai, hanh tai
cua tre » cua te, cuu tre, cua triet
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
tu sac » tu sach, tu cac, tu bac
co lai » con lai, o lai, co dai
tu san » thu san, tu ban, tu can
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu san)) ky nang co lai. hieu ve cac duc van ((hanh thai) or (sinh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang co lai. hieu ve cac duc van ((hanh thai) OR (sinh thai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky nang co lai. hieu ve cac duc van ((hanh thai) or (sinh thai)) cua tre*.