Perhaps you should try some spelling variations:
gianh lai » gian lan
ban hanh » ban hang
ky gianh » ky sinh, ky anh, ky danh
quoc ban » quoc bao, quoc lan, quoc quan
lai hoi » dai hoi, lai hoa, lai roi
va chat » van chat, cao chat, hoa chat
vai cua » dai cua, hai cua, lai cua
tu sai » tu bai, tu san, tu cai
vi cua » di cua
sai ky » sac ky

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 gianh lai hoi. hieu ((va chat) or (va phat)) quoc ban hanh ((vi cua) OR (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky gianh lai hoi. hieu ((va chat) OR (va phat)) quoc ban hanh ((vi cua) OR (vai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky gianh lai hoi. hieu ((va chat) or (va phat)) quoc ban hanh ((vi cua) OR (vai cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sai ky gianh lai hoi. hieu ((va chat) or (va phat)) quoc ban hanh ((vi cua) OR (vai cua)) te*.