Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
manh hanh » xanh hanh, danh thanh, minh thanh
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
duc manh » suc manh, duc anh, duc minh
cac duc » cac du, cao duc, cac dac
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
nang ra » nang ma, lang ra, nang ro
ra lai » ra glai, ru lai, va lai
tu ban » thu ban, te ban
tu san » thu san, tu can, vu san
tu sac » tu sach, tu cac, tu bac

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) OR (tu ban)))) ky nang ra lai. hieu van cac duc manh hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (((tu san) OR (tu ban)))) ky nang ra lai. hieu van cac duc manh hanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (((tu san) OR (tu ban)))) ky nang ra lai. hieu van cac duc manh hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (((tu san) OR (tu ban)))) ky nang ra lai. hieu van cac duc manh hanh thai cua tre*.