Perhaps you should try some spelling variations:
thien van » thi van
ban hanh » ban hang
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
cau luc » cau truc, cau phuc
luc ban » duc ban, cuc ban, luc bat
hanh ve » hanh vi, hanh va, hanh kem
ve dau » va dau, ve du, ke dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu cach) or (tu cac))) or (te sach)) ky nang xa hoi. thien van cau luc ban hanh ve dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu cach) OR (tu cac))) OR (te sach)) ky nang xa hoi. thien van cau luc ban hanh ve dau tren.
• Adding a wildcard symbol may retrieve word variants: ((((tu cach) or (tu cac))) or (te sach)) ky nang xa hoi. thien van cau luc ban hanh ve dau tren*.