Perhaps you should try some spelling variations:
gianh lai » gian lan
sang mai » sang ma, sang tai, lang mai
va gianh » va gian, van giang, va giai
dat duoc » dat nuoc, da duoc, luat duoc
cua tre » cua te, cuu tre, cua triet
lai cua » dai cua, hai cua, lai chau
ky sang » ky nang, ky dang, ky tang
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
te sai » te bai, te lai, te hai

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) OR (te tai)) ky sang mai hoi. hieu ve ((dat duoc) or (cam xuc)) va gianh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te tai)) ky sang mai hoi. hieu ve ((dat duoc) OR (cam xuc)) va gianh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sai) OR (te tai)) ky sang mai hoi. hieu ve ((dat duoc) or (cam xuc)) va gianh lai cua tre*".