Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ve triet » va trien, su triet
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
lap ve » dap ve, lap va, tap ve

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 ((thi hanh) or (thi thanh)) xa hoi. hieu ((ve cam) OR (ve cac)) tuc va thanh lap ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hanh) OR (thi thanh)) xa hoi. hieu ((ve cam) OR (ve cac)) tuc va thanh lap ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ((ve cam) OR (ve cac)) tuc va thanh lap ve triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ((ve cam) OR (ve cac)) tuc va thanh lap ve triet*.