Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
va hang » van hang, va nang, va lang
cua tre » cua te, cuu tre, cua triet
ly nang » ky nang, ly hang, ly vang
ve dao » de dao, ve bao, te dao
va dao » ca dao
y nang » ky nang, v nang, may nang
va cua » va chua, via cua, ca cua

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 ((y nang) OR (ly nang)) xa hoi. hieu ((ve dao) or (va dao)) duc va hang va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ((y nang) OR (ly nang)) xa hoi. hieu ((ve dao) OR (va dao)) duc va hang va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ((y nang) OR (ly nang)) xa hoi. hieu ((ve dao) or (va dao)) duc va hang va cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat lanh ((y nang) OR (ly nang)) xa hoi. hieu ((ve dao) or (va dao)) duc va hang va cua tre*.