Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
cham duc » pham duc, pham duy, phan duc
cuc tre » duc tre, cua tre, cuu tre
hai cuc » tai cuc, hai cua, thai cua
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky

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) or (sach y)) nang xa hoi. hieu va ((cham duc) OR (cham soc)) va hanh hai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sach y)) nang xa hoi. hieu va ((cham duc) OR (cham soc)) va hanh hai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) or (sach y)) nang xa hoi. hieu va ((cham duc) OR (cham soc)) va hanh hai cuc tre".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) or (sach y)) nang xa hoi. hieu va ((cham duc) OR (cham soc)) va hanh hai cuc tre*.