Perhaps you should try some spelling variations:
luu hanh » huu han
su sach » so sach, vu sach
ky lang » ky dang, ky tang, tay lang
hieu va » lieu va, hieu qua
va cham » va chat, va tham
luu van » cuu van, luan van
anh tai » hanh tai, anh thai, vanh tai
tai cua » thai cua, tai cuc, tri cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky lang) or (ky nang)) ha noi. hieu va cham ((luu van) OR (luu hanh)) anh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky nang)) ha noi. hieu va cham ((luu van) OR (luu hanh)) anh tai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) or (ky nang)) ha noi. hieu va cham ((luu van) OR (luu hanh)) anh tai cua te*".