Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
thuc ban » thuoc ban, thuc dan, thu ban
vu khac » vu kham, vu khanh, bui khac
nang xa » nang x, lang xa, nang ma
co thuc » do thuc, co thua, mo thuc
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khac) or (thuat sach)) ky nang xa hoi. lieu va co thuc ban thanh ((vai cua) OR (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khac) OR (thuat sach)) ky nang xa hoi. lieu va co thuc ban thanh ((vai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khac) or (thuat sach)) ky nang xa hoi. lieu va co thuc ban thanh ((vai cua) OR (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((vu khac) or (thuat sach)) ky nang xa hoi. lieu va co thuc ban thanh ((vai cua) OR (lai cua)) tre*.