Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
luu tre » luu tru, cuu tre, luy tre
hieu he » hiem he, hieu le, hieu hien
nang xa » nang x, lang xa, nang ma
ve luu » ke luu, vi luu

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) or (thu hoach)) ky nang xa hoi. ((hieu he) OR (hieu ve)) nam thuc va thanh ve luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky nang xa hoi. ((hieu he) OR (hieu ve)) nam thuc va thanh ve luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu hoach)) ky nang xa hoi. ((hieu he) OR (hieu ve)) nam thuc va thanh ve luu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky nang xa hoi. ((hieu he) OR (hieu ve)) nam thuc va thanh ve luu tre*.