Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
tham luc » than luc, tham thuc, nhan luc
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
sai ky » sac ky
ma hoi » xa hoi, ma hoa, me hoi
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 ((ma hoi) or (mai hoi)). hieu va ((tham luc) OR (tham nuoc)) van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ((ma hoi) OR (mai hoi)). hieu va ((tham luc) OR (tham nuoc)) van hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang ((ma hoi) or (mai hoi)). hieu va ((tham luc) OR (tham nuoc)) van hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ((ma hoi) or (mai hoi)). hieu va ((tham luc) OR (tham nuoc)) van hanh vai cua tre*.