Perhaps you should try some spelling variations:
va thieu » va thiet, va hieu, va tieu
hanh may » hanh mau, hanh ngay, thanh mau
sach ky » sac ky, sach y, sach ty
hanh ma » hanh mau, hanh va, anh ma
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
tuc va » truc va, tuc xa, duc va
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. lieu va cam ((tuc va) or (thuc va)) ((hanh may) OR (hanh ma)) va thieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu va cam ((tuc va) OR (thuc va)) ((hanh may) OR (hanh ma)) va thieu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. lieu va cam ((tuc va) or (thuc va)) ((hanh may) OR (hanh ma)) va thieu".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va cam ((tuc va) or (thuc va)) ((hanh may) OR (hanh ma)) va thieu*.