Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh lai » thanh lap, thanh loi, thanh tai
phan duc » pham duc, phan tu, phan dau
tu sach » thu sach, te sach, tu cach
duc van » duc va, duc tan, duc manh
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

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