Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
pham thuc » phap thuc, pham chuc, nham thuc
doc sach » hoc sach, toc sach, nuoc sach
vat hanh » vat thanh, van hanh, va hanh
hieu vi » hieu voi, hieu va, hieu ve
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, hoi cua, dai cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach thieu nang x hoi. hieu vi pham thuc vat hanh ((vai cua) or (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach thieu nang x hoi. hieu vi pham thuc vat hanh ((vai cua) OR (hai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: doc sach thieu nang x hoi. hieu vi pham thuc vat hanh ((vai cua) or (hai cua)) triet*.