Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
danh dai » danh dau, danh di, danh sai
thu sac » thu sach, thu xac, thu dac
thu san » thuy san, thu ban, phu san
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sac) or (thu san)) ky nang xa hoi. hieu ((van cac) or (van hanh)) truc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu san)) ky nang xa hoi. hieu ((van cac) OR (van hanh)) truc va danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sac) or (thu san)) ky nang xa hoi. hieu ((van cac) or (van hanh)) truc va danh dai cua tre*.