Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, mang xa
va hanh » van hanh, va thanh, va danh
nang ma » tang ma, sang ma, nang cao
cam loc » cam lo
vi cua » vai cua, di cua
loc va » hoc va, luc va
tu sac » tu cac, tu san, tu bac
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: ((tu sac) OR (tu sach)) ky ((nang xa) or (nang ma)) hoi. hieu ve cam loc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky ((nang xa) OR (nang ma)) hoi. hieu ve cam loc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu sach)) ky ((nang xa) or (nang ma)) hoi. hieu ve cam loc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu sach)) ky ((nang xa) or (nang ma)) hoi. hieu ve cam loc va hanh vi cua tre*.