Perhaps you should try some spelling variations:
cham quoc » chuan quoc, han quoc, cham soc
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
quoc van » quoc va, quoc ban, quoc lan
luat tuc » luat thue
dai hoi » dai hoc, dai hai, dai moi
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
ky sang » ky dang, ky tang, duy sang
cua tu » cua tuc, cua su, cua cu
tu sac » tu sach, tu cac, tu san

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 ((ky sang) or (ky nang)) dai hoi. hieu tu cham quoc van hanh tai ((cua tu) or (luat tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky sang) OR (ky nang)) dai hoi. hieu tu cham quoc van hanh tai ((cua tu) OR (luat tuc)).
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky sang) or (ky nang)) dai hoi. hieu tu cham quoc van hanh tai ((cua tu) or (luat tuc))*.