Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu van » thien van, lieu va, hieu ve
dinh lam » dinh van, tinh lao
lam chau » lai chau, lam chu, lam chat
chau tre » chay tren, chau tho, cho tre
lanh ky » hanh ky, nganh ky, thanh ky
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
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 lanh ky nang xa hoi. ((hieu va) or (hieu van)) coc ((luc va) OR (duc va)) dinh lam chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ky nang xa hoi. ((hieu va) OR (hieu van)) coc ((luc va) OR (duc va)) dinh lam chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ky nang xa hoi. ((hieu va) or (hieu van)) coc ((luc va) OR (duc va)) dinh lam chau tre".
• Adding a wildcard symbol may retrieve word variants: thuat lanh ky nang xa hoi. ((hieu va) or (hieu van)) coc ((luc va) OR (duc va)) dinh lam chau tre*.