Perhaps you should try some spelling variations:
van trieu » tan trieu, van tieu, van tien
van hanh » van thanh, ban hanh, van anh
van hieu » cao hieu
te sach » toc sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
ve cam » ve cac, va cam, ve cai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) duc van hanh vi ((van trieu) OR (van hieu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) duc van hanh vi ((van trieu) or (van hieu))~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) duc van hanh vi ((van trieu) or (van hieu))*.