Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
phan lap » phan dau
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
duc ban » duc tan, duc van, dua ban
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. hieu van pham duc ban ((thanh lai) or (phan lap)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu van pham duc ban ((thanh lai) OR (phan lap)) cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu van pham duc ban ((thanh lai) or (phan lap)) cua te*.