Perhaps you should try some spelling variations:
thuat hanh » thuat thanh, thuat lanh, thuat hinh
chay tren » thai tren, ca tren, cau tren
hieu van » hieu va, thien van, lieu va
dinh lam » dinh van, tinh lao
lam chay » lam chat, lam thay, lam cha
hanh ky » hanh kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
luc va » tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat hanh ky nang xa hoi. ((hieu ve) or (hieu van)) coc ((luc va) OR (duc va)) dinh lam chay tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat hanh ky nang xa hoi. ((hieu ve) OR (hieu van)) coc ((luc va) OR (duc va)) dinh lam chay tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat hanh ky nang xa hoi. ((hieu ve) or (hieu van)) coc ((luc va) OR (duc va)) dinh lam chay tren".
• Adding a wildcard symbol may retrieve word variants: thuat hanh ky nang xa hoi. ((hieu ve) or (hieu van)) coc ((luc va) OR (duc va)) dinh lam chay tren*.