Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
qua nhat » qua hoat, luc nhat, qua hai
sang lai » sang tai, sang lap, sang mai
mang lai » mang lam, mang luoi, dang loai
vai cua » dai cua, hai cua, lai cua
tu san » thu san, tu ban, tu can
tuc va » thuc va, truc va, duc va
san ky » sang ky, van ky, dan ky
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((sang lai) OR (mang lai)) hoa. hieu qua nhat ((tuc va) or (tuc xa)) thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((sang lai) OR (mang lai)) hoa. hieu qua nhat ((tuc va) OR (tuc xa)) thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((sang lai) OR (mang lai)) hoa. hieu qua nhat ((tuc va) or (tuc xa)) thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((sang lai) OR (mang lai)) hoa. hieu qua nhat ((tuc va) or (tuc xa)) thanh vai cua te*.