Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
thu tai » tu tai, tru tai, thu hai
duc ban » duc tan, duc van, dua ban
xuc ban » cuc ban, quoc ban, xuat ban
va cham » va chat, va tham
hieu va » lieu va, hieu qua
lang ha » long ha
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
tai ky » thai ky, trai ky, sai ky
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu tai ky ((lang ha) or (tang ma)) noi. hieu va cham ((xuc ban) or (duc ban)) thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu tai ky ((lang ha) OR (tang ma)) noi. hieu va cham ((xuc ban) OR (duc ban)) thanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: thu tai ky ((lang ha) or (tang ma)) noi. hieu va cham ((xuc ban) or (duc ban)) thanh ve cua tre*.