Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
chat lua » chat cua, chat va, chat huu
van hanh » van thanh, ban hanh, van anh
nhan luc » nang luc
cua tre » cua te, cuu tre, cua triet
va hanh » va thanh, va danh, ban hanh
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
te bai » te bao, te tai, te ban
bai ky » ban ky, sai ky, bac 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 lang van hoi. hieu qua ((chat lua) or (nhan luc)) ((va hanh) OR (van hanh)) tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ky lang van hoi. hieu qua ((chat lua) OR (nhan luc)) ((va hanh) OR (van hanh)) tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te bai ky lang van hoi. hieu qua ((chat lua) or (nhan luc)) ((va hanh) OR (van hanh)) tri cua tre".
• Adding a wildcard symbol may retrieve word variants: te bai ky lang van hoi. hieu qua ((chat lua) or (nhan luc)) ((va hanh) OR (van hanh)) tri cua tre*.