Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
te sach » toc sach
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va thanh, va danh
hieu va » lieu va
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
di cua » doi cua, de cua, do 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 ty nang ma hoi. ((hieu va) or (hieu qua)) cham tuc va hanh ((di cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ma hoi. ((hieu va) OR (hieu qua)) cham tuc va hanh ((di cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ma hoi. ((hieu va) or (hieu qua)) cham tuc va hanh ((di cua) or (dai cua)) tre*.