Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
van lanh » van anh, van hanh, van manh
dao cua » dai cua, day cua, dan cua
thu san » thuy san, thu ban, phu san
duc van » duc va, duc tan, duc manh
tu san » tu ban, tu can, vu san
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) OR (thu 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) OR (thu san)) ky nang x hoi. hieu ((ve cam) OR (vien cac)) duc van lanh dao cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (thu 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) OR (thu san)) ky nang x hoi. hieu ((ve cam) or (vien cac)) duc van lanh dao cua te*.