Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach
soc gia » toc gia, hoc gia, so gia
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
du tren » dua tren, dau tren, duc tren
y nang » ky nang, ly nang, v nang
vi du » vi dum, va du, ve du

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (vu sach)) y nang xa hoi. hieu ((ve cham) or (ve chat)) soc gia thanh vi du tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu ((ve cham) OR (ve chat)) soc gia thanh vi du tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang xa hoi. hieu ((ve cham) or (ve chat)) soc gia thanh vi du tren".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang xa hoi. hieu ((ve cham) or (ve chat)) soc gia thanh vi du tren*.