Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
cuc tre » duc tre, cua tre, cuu tre
xuc van » duc van, luc van, vuc van
nang ro » nang co, nang ho, nang rong
cac xuc » cam xuc, cac nuoc, chat xuc
nang ra » nang ma, lang ra, nang va
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
tu bac » tu ban, tu cac, tu bat
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bac) or (tu san)) ky ((nang ro) OR (nang ra)) lai. hieu ve cac xuc van hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bac) OR (tu san)) ky ((nang ro) OR (nang ra)) lai. hieu ve cac xuc van hanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bac) or (tu san)) ky ((nang ro) OR (nang ra)) lai. hieu ve cac xuc van hanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((tu bac) or (tu san)) ky ((nang ro) OR (nang ra)) lai. hieu ve cac xuc van hanh tai cuc tre*.