Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
vu tham » va tham, vu kham, vu thai
vu cham » va cham, vu kham, tu cham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
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 ((vu tham) OR (vu cham)) thuc va hanh 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 ((vu tham) OR (vu cham)) thuc va hanh 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 ((vu tham) OR (vu cham)) thuc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) ky nang xa hoi. hieu ((vu tham) OR (vu cham)) thuc va hanh vi cua te*.