Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh loi, thanh tai
thanh lap » thanh san, phan lap, thanh hai
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
5 hoi » o hoi

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 ky nang ((5 hoi) or (x ho)). hieu qua cam duc van ((thanh lai) or (thanh lap)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((5 hoi) OR (x ho)). hieu qua cam duc van ((thanh lai) OR (thanh lap)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((5 hoi) or (x ho)). hieu qua cam duc van ((thanh lai) or (thanh lap)) cua triet*.