Perhaps you should try some spelling variations:
tang hoa » hang hoa, tang ha, tang ho
duc manh » suc manh, duc anh, duc minh
cua tre » cua te, cuu tre, cua triet
xuc ban » duc ban, cuc ban, quoc ban
hanh ve » hanh vi, hanh va, hanh kem
hieu va » lieu va, hieu qua
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ve » hieu van
ky tang » ky nang, ky dang, kho tang
sai ky » sac ky
ve cua » le cua, de cua, te cua
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky tang hoa hoi. ((hieu ve) or (hieu va)) cam ((xuc ban) or (duc manh)) hanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky tang hoa hoi. ((hieu ve) OR (hieu va)) cam ((xuc ban) OR (duc manh)) hanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky tang hoa hoi. ((hieu ve) or (hieu va)) cam ((xuc ban) or (duc manh)) hanh ve cua tre*.