Perhaps you should try some spelling variations:
lang chai » lang ha, lang cua, lang phi
nang cay » nang cao, nang cap, nang cai
cay phoi » cap phoi, tay hoi, cay cho
hieu van » hieu va, thien van, lieu va
lanh hai » manh hai, thanh hai, lanh dao
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van lam » van nam
lam duc » lam duoc, pham duc, nam duoc
duc ban » duc tan, duc van, dua ban
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 ky nang cay phoi. hieu van lam duc ban ((lanh hai) or (lang chai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cay phoi. hieu van lam duc ban ((lanh hai) OR (lang chai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang cay phoi. hieu van lam duc ban ((lanh hai) or (lang chai)) cua tre*.