Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ly » khanh ly, khao ly, khich le
va trien » va truyen, va thiet, va tuyen
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
hanh ve » hanh vi, hanh kem
hanh va » hang va, hanh vi
cau luc » cau truc, cau phuc
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ly nang ((x hoi) or (x ho)). hieu ve cau luc va ((hanh ve) or (hanh va)) va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ly nang ((x hoi) OR (x ho)). hieu ve cau luc va ((hanh ve) OR (hanh va)) va trien.
• Adding a wildcard symbol may retrieve word variants: vu khach ly nang ((x hoi) or (x ho)). hieu ve cau luc va ((hanh ve) or (hanh va)) va trien*.