Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
quoc ban » quoc bao, quoc lan, quoc quan
nang son » nang song, nang soan, lang son
danh di » danh du, danh dien, danh gia
xanh di » vanh dai, xanh tai
qua cam » qua cham, qua cac, qua cai
son hai » cong hai
qua ca » qua cac, qua cua, qua cai
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang son hai. hieu ((qua cam) or (qua ca)) quoc ban ((xanh di) or (danh di)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang son hai. hieu ((qua cam) OR (qua ca)) quoc ban ((xanh di) OR (danh di)) va triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang son hai. hieu ((qua cam) or (qua ca)) quoc ban ((xanh di) or (danh di)) va triet*.