Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
thu sai » thu hai, thu tai, thu san
van hac » van hoc, van ha, van hai
van cac » van cau, van bac, dan cac
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sai ky » sac ky
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sai ky nang xa hoi. hieu ((van cac) or (van hac)) trang ((va danh) OR (va hanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sai ky nang xa hoi. hieu ((van cac) OR (van hac)) trang ((va danh) OR (va hanh)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sai ky nang xa hoi. hieu ((van cac) or (van hac)) trang ((va danh) OR (va hanh)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sai ky nang xa hoi. hieu ((van cac) or (van hac)) trang ((va danh) OR (va hanh)) di cua tre*.