Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
bao luc » bao thuc
vai cua » dai cua, hai cua, lai cua
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
bao duc » dao duc, cao duc, giao duc
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: ((tu sach) or (so sach)) ky nang ma hoi. hieu ve ((bao duc) OR (bao luc)) va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang ma hoi. hieu ve ((bao duc) OR (bao luc)) va thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (so sach)) ky nang ma hoi. hieu ve ((bao duc) OR (bao luc)) va thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang ma hoi. hieu ve ((bao duc) OR (bao luc)) va thanh vai cua te*.