Perhaps you should try some spelling variations:
lap thuc » tap thuc, luan thuc, phap thuc
vat hanh » vat thanh, van hanh, va hanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
doi cua » dai cua, hoi cua
va lap » va dap
di cua » dai cua, de cua, do cua

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. hieu va lap thuc vat hanh ((di cua) OR (doi cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu va lap thuc vat hanh ((di cua) OR (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu va lap thuc vat hanh ((di cua) OR (doi cua)) tre*.