Perhaps you should try some spelling variations:
trinh san » trinh han, trinh quan, trinh toan
va trinh » van trinh, va tinh, lap trinh
cuu tre » cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cua triet, dua tren
hieu ve » hieu va, hieu van
cam tuc » cam xuc, nam thuc, dam thuc
te sai » te tai, te bai, te lai
cam tu » cam thu, nam tu, dam tu
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang ma hoi. hieu ve ((cam tuc) or (cam tu)) va trinh san ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang ma hoi. hieu ve ((cam tuc) OR (cam tu)) va trinh san ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sai ky nang ma hoi. hieu ve ((cam tuc) or (cam tu)) va trinh san ((cua tre) or (cuu tre))*.