Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thuc va » thuc vat, thuc dan, thuc day
nang xa » nang x, lang xa, nang ma
su tham » su thay, so tham, su tam
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
su pham » san pham
vi cua » vai cua, di 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 sach) or (thu hoach)) ky nang xa hoi. hieu ((su tham) OR (su pham)) thuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thu hoach)) ky nang xa hoi. hieu ((su tham) OR (su pham)) thuc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thu hoach)) ky nang xa hoi. hieu ((su tham) OR (su pham)) thuc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) ky nang xa hoi. hieu ((su tham) OR (su pham)) thuc va danh vi cua te*.