Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dang hoa » dang hoai, dang khoa, dong hoa
duc manh » suc manh, duc anh, duc minh
hanh ve » hanh vi, hanh va, hanh kem
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky dang » ky nang, ky danh
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 dang hoa hoi. ((hieu ve) or (hieu van)) 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 dang hoa hoi. ((hieu ve) OR (hieu van)) cam ((xuc ban) OR (duc manh)) hanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky dang hoa hoi. ((hieu ve) or (hieu van)) cam ((xuc ban) or (duc manh)) hanh ve cua tre*.