Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
va triet » va thiet, va trien, ve triet
ha thanh » va thanh, pham thanh, phan thanh
chat duc » chat xuc, chat doc, chet duoc
su sach » so sach, vu sach
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
so viet » hoc viet
duc ha » duc hau, duc hoa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((nang ma) or (tang ma)) hoi. hieu va chat duc ha thanh lai ((va triet) or (so viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang ma) OR (tang ma)) hoi. hieu va chat duc ha thanh lai ((va triet) OR (so viet)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang ma) or (tang ma)) hoi. hieu va chat duc ha thanh lai ((va triet) or (so viet))*.