Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh keo » hanh kem, banh keo, hanh theo
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
ve cham » va cham, ve chat, vu cham
keo cua » keo sua, kho cua, khoe cua
cua te » cua tu
ve cam » ve cac, va cam, ve cai
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: ((te sach) or (toc sach)) ky nang x hoi. hieu ((ve cam) OR (ve cham)) luoc van hanh keo cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang x hoi. hieu ((ve cam) OR (ve cham)) luoc van hanh keo cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky nang x hoi. hieu ((ve cam) OR (ve cham)) luoc van hanh keo cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang x hoi. hieu ((ve cam) OR (ve cham)) luoc van hanh keo cua te*.