Perhaps you should try some spelling variations:
tang hanh » tang thanh, dang hanh, nang hanh
hanh lam » thanh lap, hanh kem, hanh va
duc tang » duc thang, duc tan, tuc tang
sach thu » sach thue, sach thieu, sach tham
tu sach » thu sach, su sach, te sach
lam cua » nam cua, lam chat
van cam » van nam, van cau, van dam
van lam » van nam
mang xa » lang xa, mang may, dang xay
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu ((mang xa) or (nang x)) hoi. hieu ((van cam) or (van lam)) duc tang hanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu ((mang xa) OR (nang x)) hoi. hieu ((van cam) OR (van lam)) duc tang hanh lam cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach thu ((mang xa) or (nang x)) hoi. hieu ((van cam) or (van lam)) duc tang hanh lam cua tre*.