Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
chat duc » chat xuc, chat doc, chet duoc
hanh tai » thanh tai, hang tai, han tai
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. ((hieu ve) or (hieu va)) chat duc van ((thanh loi) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. ((hieu ve) OR (hieu va)) chat duc van ((thanh loi) OR (hanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. ((hieu ve) or (hieu va)) chat duc van ((thanh loi) or (hanh tai)) cua tre*.