Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
nang mai » nang ma, nang tai, lang mai
tai cuu » tai cuc, tai buu, tai cua
xa hung » ba hung, ha hung, la hung
xa hang » va hang, xa bang, ban hang
te sach » toc sach
hieu va » hieu qua
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang mai hoi. ((hieu va) or (lieu va)) nam thuc ((xa hang) OR (xa hung)) tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mai hoi. ((hieu va) OR (lieu va)) nam thuc ((xa hang) OR (xa hung)) tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang mai hoi. ((hieu va) or (lieu va)) nam thuc ((xa hang) OR (xa hung)) tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai hoi. ((hieu va) or (lieu va)) nam thuc ((xa hang) OR (xa hung)) tai cuu tre*.