Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vu sac » vu san, va sac, vu cac
di cua » doi cua, de cua, do cua
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sac) or (vu sach)) ky lang xa hoi. hieu ve am thuc va hanh ((di cua) OR (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sac) OR (vu sach)) ky lang xa hoi. hieu ve am thuc va hanh ((di cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sac) or (vu sach)) ky lang xa hoi. hieu ve am thuc va hanh ((di cua) OR (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((vu sac) or (vu sach)) ky lang xa hoi. hieu ve am thuc va hanh ((di cua) OR (dai cua)) te*.