Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
vinh cuu » dinh cuu, sinh cua, tinh cua
dinh cu » dinh cuu, dinh chuc, dinh chau
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va
nang co » nang cao, nang doc, nang noi
co loi » co hoi

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 co loi. ((hieu va) OR (hieu qua)) cham truc va danh ((vinh cuu) or (dinh cu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang co loi. ((hieu va) OR (hieu qua)) cham truc va danh ((vinh cuu) OR (dinh cu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang co loi. ((hieu va) OR (hieu qua)) cham truc va danh ((vinh cuu) or (dinh cu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang co loi. ((hieu va) OR (hieu qua)) cham truc va danh ((vinh cuu) or (dinh cu)) tre*.