Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
dinh dai » dinh dat, sinh dai, dinh dao
chat xuc » chat huu, cam xuc, chao xu
hieu van » thien van, lieu va, hieu ve
lang van » dang van, tang van, hoang van
lanh ky » hanh ky, nganh ky, thanh ky
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc 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) or (lang van)) hoi. ((hieu van) OR (hieu va)) chat xuc va dinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ky ((nang xa) OR (lang van)) hoi. ((hieu van) OR (hieu va)) chat xuc va dinh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ky ((nang xa) or (lang van)) hoi. ((hieu van) OR (hieu va)) chat xuc va dinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat lanh ky ((nang xa) or (lang van)) hoi. ((hieu van) OR (hieu va)) chat xuc va dinh dai cua tre*.