Perhaps you should try some spelling variations:
lanh hai » manh hai, thanh hai, lang chai
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
lam xuc » cam xuc, lam duoc
hai cua » thai cua, dai cua, hoi cua
te sach » toc sach
lang xa » lang ha, dang xay, lang van
va lanh » va lang, va danh, va hanh
nang ma » tang ma, sang ma, nang cao
van lam » van nam
xuc va » duc va, tuc va, luc va
cua su » qua su

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 (te sach)) ty ((lang xa) or (nang ma)) hoi. hieu van lam xuc va lanh hai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty ((lang xa) OR (nang ma)) hoi. hieu van lam xuc va lanh hai cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty ((lang xa) or (nang ma)) hoi. hieu van lam xuc va lanh hai cua su".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty ((lang xa) or (nang ma)) hoi. hieu van lam xuc va lanh hai cua su*.