Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va thanh, va danh
cac tuc » cac toc, cac tu, cac tac
hieu va » hieu qua
sang ma » tang ma, nang ma, sang tao
ty sang » ty xang, ty hang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
ca cuu » cua cuu, ca cua, ca cau

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 sang ma hoi. ((hieu va) OR (lieu va)) cac tuc va hanh ((ca cuu) or (cap cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty sang ma hoi. ((hieu va) OR (lieu va)) cac tuc va hanh ((ca cuu) OR (cap cuu)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty sang ma hoi. ((hieu va) OR (lieu va)) cac tuc va hanh ((ca cuu) or (cap cuu)) tre*".