Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
cham truc » cau truc, nham thuc, pham thuc
thu bang » thu ban, chu bang, thu trang
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
thu hang » thi hang, thuc hanh, thu huong
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
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: so sach ((thu bang) OR (thu hang)) xa hoi. hieu ve ((cham truc) or (phap thuc)) va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((thu bang) OR (thu hang)) xa hoi. hieu ve ((cham truc) OR (phap thuc)) va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((thu bang) OR (thu hang)) xa hoi. hieu ve ((cham truc) or (phap thuc)) va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ((thu bang) OR (thu hang)) xa hoi. hieu ve ((cham truc) or (phap thuc)) va thanh vi cua te*.