Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
cau tren » cu tren, dau tren, ca tren
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
soc gia » toc gia, hoc gia, quoc gia
so gia » so giai, so giao, ho gia
vi cau » va cau, ve cau, di cau

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

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