Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
hanh vai » hanh vi, hanh va, hanh tai
luoc can » luc canh, luoc dai, duoc cac
cuu tre » cua tre, cau tren, cau treo
hoc can » hoc dan, hoc cao, hoc cac
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
vai cuu » vai cua
duc van » duc va, duc tan, duc manh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
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: te sac ky nang mai hoi. hieu ve cac ((duc van) or (((luoc can) OR (hoc can)))) hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang mai hoi. hieu ve cac ((duc van) OR (((luoc can) OR (hoc can)))) hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang mai hoi. hieu ve cac ((duc van) or (((luoc can) OR (hoc can)))) hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang mai hoi. hieu ve cac ((duc van) or (((luoc can) OR (hoc can)))) hanh vai cuu tre*.