Perhaps you should try some spelling variations:
sach nham » sach nha, sach tham, sach han
lang mai » lang hai, lang man, sang mai
thanh ve » hanh ve, thanh va, thanh vien
lang dai » lang hai, lang chai, hoang dai
vu sach » vu bach, su sach, vu khach
cam duc » cam xuc, cao duc, nam duoc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach nham ((lang mai) OR (lang dai)) hoi. hieu ve ((cam duc) or (pham duc)) gia thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach nham ((lang mai) OR (lang dai)) hoi. hieu ve ((cam duc) OR (pham duc)) gia thanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach nham ((lang mai) OR (lang dai)) hoi. hieu ve ((cam duc) or (pham duc)) gia thanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach nham ((lang mai) OR (lang dai)) hoi. hieu ve ((cam duc) or (pham duc)) gia thanh ve cua tre*.