Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
cac duc » cao duc, cac dac, cac nuoc
nang ra » nang ma, lang ra, nang ro
hieu ve » hieu va, hieu van
tu sac » tu sach, tu cac, tu bac
ra lai » ra glai, ru lai, va lai
tu san » thu san, tu ban, tu can
cua te » cua tu

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) or (tu san)) ky nang ra lai. hieu ve ((cac duc) or (cac du)) van hanh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang ra lai. hieu ve ((cac duc) OR (cac du)) van hanh thai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky nang ra lai. hieu ve ((cac duc) or (cac du)) van hanh thai cua te*.