Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
van hanh » van thanh, ban hanh, van anh
vu cham » va cham, vu kham, tu cham
hanh vu » hanh vi, hanh va, hanh tu
tuc van » thuc van, truc van, tuc va
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, ve chim
danh xa » danh ca, dinh xa, canh xa
y danh » ky danh, ly danh, 1 danh
ve cam » ve cac, va cam, ve cai
vu van » tu van

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 y danh xa hoi. hieu ((((ve cam) OR (ve cham))) or (vu cham)) tuc van hanh vu van triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y danh xa hoi. hieu ((((ve cam) OR (ve cham))) OR (vu cham)) tuc van hanh vu van triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y danh xa hoi. hieu ((((ve cam) OR (ve cham))) or (vu cham)) tuc van hanh vu van triet*".