Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh dai » thanh hai, thanh tai, thanh dat
lang mai » lang dai, lang hai, lang man
tang tai » hang tai, dung tai, sang tao
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((tang tai) or (lang mai)) hoi. hieu ve cam duc tan thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((tang tai) OR (lang mai)) hoi. hieu ve cam duc tan thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((tang tai) or (lang mai)) hoi. hieu ve cam duc tan thanh dai cua tre*.