Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
van lanh » van anh, van hanh, van manh
duc van » duc va, duc tan, duc manh
dao cua » dai cua, day cua, dan cua
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ve cam » ve cham, ve cac, va cam
cua te » cua tu
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 san ky nang x hoi. hieu ((ve cam) or (vien cac)) duc van lanh dao cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang x hoi. hieu ((ve cam) OR (vien cac)) duc van lanh dao cua te.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang x hoi. hieu ((ve cam) or (vien cac)) duc van lanh dao cua te*.