Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, cua khach
danh dai » danh dau, danh di, danh sai
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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) OR (vay khach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) thuc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (vay khach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) thuc va danh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) OR (vay khach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) thuc va danh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) OR (vay khach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) thuc va danh dai cua tre*.