Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van cham » van tham, va cham, van pham
van chat » cao chat
van phan » van phong, van thanh, luan phan
phan lap » phan dau
nam viet » pham viet, lam viec, bac viet
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
duc van » duc va, duc tan, duc manh
lap nam » dap nam, lai nam, loai nam
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang x hoi. hieu ((van cham) or (van chat)) duc van phan lap nam viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang x hoi. hieu ((van cham) OR (van chat)) duc van phan lap nam viet.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang x hoi. hieu ((van cham) or (van chat)) duc van phan lap nam viet*.