Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
hieu va » hieu qua
tang ha » lang ha, tang ma, trung ha
ky tang » ky nang, ky dang, kho tang
ha hoi » hoa hoi, ha noi, xa hoi
vi cua » di cua

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 tang ha hoi. ((hieu va) or (lieu va)) cham truc va danh ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ha hoi. ((hieu va) OR (lieu va)) cham truc va danh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ha hoi. ((hieu va) or (lieu va)) cham truc va danh ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ha hoi. ((hieu va) or (lieu va)) cham truc va danh ((vi cua) OR (vai cua)) tre*.