Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
va hanh » va thanh, va danh, ban hanh
thu sac » thu sach, thu san, thu xac
cao hoi » cau hoi, co hoi, cao hoc
sac ky » cac ky, sai ky
ve cac » va cac
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang cao hoi. hieu ((ve cac) or (vien cac)) xuc ((va hanh) or (van hanh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang cao hoi. hieu ((ve cac) OR (vien cac)) xuc ((va hanh) OR (van hanh)) di cua te.
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang cao hoi. hieu ((ve cac) or (vien cac)) xuc ((va hanh) or (van hanh)) di cua te*.