Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dat tren » dat trong, dua tren
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
de dat » de dao
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hoach) or (thuoc sach)) ky nang x hoi. lieu va cam tuc va hanh de dat tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuoc sach)) ky nang x hoi. lieu va cam tuc va hanh de dat tren.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuoc sach)) ky nang x hoi. lieu va cam tuc va hanh de dat tren*.