Perhaps you should try some spelling variations:
thanh trinh » hanh trinh, thanh tinh, thanh binh
thanh tri » thanh tra, thanh tai, chinh tri
nang xay » dang xay, nganh xay, nang xuan
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
nam duc » nam duoc, pham duc, nam thuc
duc van » duc va, duc tan, duc manh
xay hoi » xa hoi, tay hoi, cay phoi
su dai » sau dai, si dai, su tai
su sai » su tai, su hai, su mai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sai) or (su dai)) ky nang xay hoi. hieu van nam duc van ((thanh tri) or (thanh trinh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su dai)) ky nang xay hoi. hieu van nam duc van ((thanh tri) OR (thanh trinh)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sai) or (su dai)) ky nang xay hoi. hieu van nam duc van ((thanh tri) or (thanh trinh)) cua tre*.