Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hanh vai » hanh vi, hanh va, hanh tai
vat hanh » vat thanh, van hanh, va hanh
nam thuc » nam thuoc, am thuc, nam thu
hiem he » hiem xe, thien he, hiem cho
vai cau » va cau, van cau, vai cac
te sach » toc sach
hieu he » hieu ve, hieu le, hieu hien
sang ma » tang ma, nang ma, sang tao

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 y ((sang ma) or (nang x)) hoi. ((hieu he) OR (hiem he)) nam thuc vat hanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((sang ma) OR (nang x)) hoi. ((hieu he) OR (hiem he)) nam thuc vat hanh vai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((sang ma) or (nang x)) hoi. ((hieu he) OR (hiem he)) nam thuc vat hanh vai cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach y ((sang ma) or (nang x)) hoi. ((hieu he) OR (hiem he)) nam thuc vat hanh vai cau tren*.