Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, phan duc
hanh dai » hanh tai, hanh dao, vanh dai
tan hanh » tan thanh, tang hanh, toan hanh
sach thu » sach thue, sach thieu, sach tham
pham duy » pham duc
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
dai va » mai va
thiet » thieu

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 ty) or (sach thu)) lang xa hoi. hieu ve ((cham duc) or (pham duy)) tan hanh dai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) lang xa hoi. hieu ve ((cham duc) OR (pham duy)) tan hanh dai va thiet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) lang xa hoi. hieu ve ((cham duc) or (pham duy)) tan hanh dai va thiet*.