Perhaps you should try some spelling variations:
hanh sai » hanh san, hanh tai, danh sai
te sach » toc sach
ky lang » ky dang, ky tang, tay lang
sai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
loc va » hoc va, luc va
cua te » cua tu
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai

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 ((ky lang) or (ky nang)) xa hoi. hieu ((ve cam) OR (va cam)) loc va hanh sai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky nang)) xa hoi. hieu ((ve cam) OR (va cam)) loc va hanh sai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) or (ky nang)) xa hoi. hieu ((ve cam) OR (va cam)) loc va hanh sai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky nang)) xa hoi. hieu ((ve cam) OR (va cam)) loc va hanh sai cua te*.