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

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 y nang xa hoi. hieu ((vu cham) or (ve chat)) soc gia thanh vi ((du tren) OR (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((vu cham) OR (ve chat)) soc gia thanh vi ((du tren) OR (dau tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ((vu cham) or (ve chat)) soc gia thanh vi ((du tren) OR (dau tren))*".