Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc van » duc va, duc tan, duc phan
cua te » cua tu

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 (thu sach)) ty xang xa hoi. hieu ve pham ((duc van) or (duc manh)) hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ty xang xa hoi. hieu ve pham ((duc van) OR (duc manh)) hanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ty xang xa hoi. hieu ve pham ((duc van) or (duc manh)) hanh dai cua te*.