Perhaps you should try some spelling variations:
tinh san » trinh san, tinh sang, tinh son
cua tre » cua te, cuu tre, cua triet
cam tuc » cam xuc, nam thuc, dam thuc
nang ma » tang ma, sang ma, nang cao
san cua » sang cua, ban cua, dan cua
hieu ve » hieu van
va tinh » may tinh
hieu va » lieu va, hieu qua
cam tu » cam thu, nam tu, dam tu
te sai » te tai, te bai, te lai
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) OR (hieu va)) ((cam tuc) or (cam tu)) va tinh san cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang ma hoi. ((hieu ve) OR (hieu va)) ((cam tuc) OR (cam tu)) va tinh san cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang ma hoi. ((hieu ve) OR (hieu va)) ((cam tuc) or (cam tu)) va tinh san cua tre".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang ma hoi. ((hieu ve) OR (hieu va)) ((cam tuc) or (cam tu)) va tinh san cua tre*.