Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
thanh tai » thanh hai, thanh toan, doanh tai
nhanh ly » khanh ly, nhanh li, nhanh cay
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
ly hang » ly quang
tuc va » thuc va, truc va, duc va
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhanh ly hang xa hoi. hieu ve cac ((tuc va) or (tuc xa)) ((han tai) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhanh ly hang xa hoi. hieu ve cac ((tuc va) OR (tuc xa)) ((han tai) OR (thanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc nhanh ly hang xa hoi. hieu ve cac ((tuc va) or (tuc xa)) ((han tai) or (thanh tai)) cua tre*.