Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
thu sac » thu san, thu xac, thu dac
van cam » van lam, van cau, van dam
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
cua te » cua tu
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 sac) OR (thu sach)) ky nang x hoi. hieu ((van cam) or (van nam)) cuu van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu sach)) ky nang x hoi. hieu ((van cam) OR (van nam)) cuu van hanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) OR (thu sach)) ky nang x hoi. hieu ((van cam) or (van nam)) cuu van hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sac) OR (thu sach)) ky nang x hoi. hieu ((van cam) or (van nam)) cuu van hanh di cua te*.