Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
hanh thai » nhanh thai, hanh tai, anh thai
cua tre » cua te, cuu tre, cua triet
nang ro » nang co, nang ho, nang ra
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
ro lai » o lai, ho lai, ru lai
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 ro lai. hieu ve cac duc van ((hanh thai) OR (hinh thai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky nang ro lai. hieu ve cac duc van ((hanh thai) OR (hinh thai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu san)) ky nang ro lai. hieu ve cac duc van ((hanh thai) OR (hinh thai)) cua tre*.