Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
hieu van » thien van, lieu va, hieu ve
thai cua » than cua, tai cuc, tri cua
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
sac ky » sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sac ky) or (cac ky)) lang xa hoi. ((hieu van) OR (hieu va)) cam duc va hanh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (cac ky)) lang xa hoi. ((hieu van) OR (hieu va)) cam duc va hanh thai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sac ky) or (cac ky)) lang xa hoi. ((hieu van) OR (hieu va)) cam duc va hanh thai cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (cac ky)) lang xa hoi. ((hieu van) OR (hieu va)) cam duc va hanh thai cua te*.