Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
day thanh » dao thanh, dat thanh, da thanh
thi van » thi lan, thi hanh, thi nang
van cam » van nam, van lam, van cau
cu tren » tu tren, dua tren
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
cam tu » cam thu, nam tu, dam tu
va cu » va cau, va chu, va su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x ho. thi van cam tu ((day thanh) or (dat khanh)) va cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x ho. thi van cam tu ((day thanh) OR (dat khanh)) va cu tren.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. thi van cam tu ((day thanh) or (dat khanh)) va cu tren*.