Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
hanh de » hanh ve, hanh kem
duc van » duc va, duc tan, duc manh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky tang » ky nang, ky dang, kho tang
dan ky » van ky
ha hoi » ha noi, xa hoi, va hoi
de cua » le cua, te cua, dieu cua
tu dan » tuc dan, tu ban, cu dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky tang ((ha hoi) OR (hoa hoi)). hieu va cham ((duc van) or (suc manh)) hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky tang ((ha hoi) OR (hoa hoi)). hieu va cham ((duc van) OR (suc manh)) hanh de cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky tang ((ha hoi) OR (hoa hoi)). hieu va cham ((duc van) or (suc manh)) hanh de cua tre*".