Perhaps you should try some spelling variations:
va thuat » ky thuat, ki thuat, va thiet
lanh hai » manh hai, thanh hai, lang chai
va cham » va chat, va tham
va lanh » va lang, va danh, va hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
tu can » tu ban, tu cac, thu canh
can ky » van ky, dan ky, ban ky
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky nang x hoi. lieu ((va cham) or (((va thuat) OR (va thuc)))) luc va lanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky nang x hoi. lieu ((va cham) OR (((va thuat) OR (va thuc)))) luc va lanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu can ky nang x hoi. lieu ((va cham) or (((va thuat) OR (va thuc)))) luc va lanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu can ky nang x hoi. lieu ((va cham) or (((va thuat) OR (va thuc)))) luc va lanh hai cua tre*.