Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thu lang » thu hang, thu bang, phu lang
hieu van » hieu va, thien van, hieu ve
tan hanh » tan thanh, tang hanh, toan hanh
hanh lai » hanh lam, hanh tai, thanh lap
chau tho » chat thom, cau thi, phu tho
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
cam duc » cam xuc, cao duc, pham duc

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) or (toc sach)) thu lang xa hoi. ((hieu van) OR (lieu va)) cam duc tan hanh lai chau tho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) thu lang xa hoi. ((hieu van) OR (lieu va)) cam duc tan hanh lai chau tho*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (toc sach)) thu lang xa hoi. ((hieu van) OR (lieu va)) cam duc tan hanh lai chau tho*".