Perhaps you should try some spelling variations:
manh han » manh hai, manh hon, anh han
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
tai cua » thai cua, tai cuc, tri cua
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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 xa) or (lang xa)) hoi. hieu ((ve cam) OR (ve cac)) suc manh han tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (lang xa)) hoi. hieu ((ve cam) OR (ve cac)) suc manh han tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) or (lang xa)) hoi. hieu ((ve cam) OR (ve cac)) suc manh han tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (lang xa)) hoi. hieu ((ve cam) OR (ve cac)) suc manh han tai cua tre*.