Perhaps you should try some spelling variations:
sach tai » sach bai, sach tham, sach dao
tai nang » thi nang, tai lang, dai nang
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
lam duoc » nam duoc, luat duoc, lam thuoc
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
lam cuc » lam cua, pham cuc
nang xa » nang x, lang xa, nang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tai nang xa hoi. hieu van ((lam cuc) or (lam duoc)) ban hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tai nang xa hoi. hieu van ((lam cuc) OR (lam duoc)) ban hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tai nang xa hoi. hieu van ((lam cuc) or (lam duoc)) ban hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach tai nang xa hoi. hieu van ((lam cuc) or (lam duoc)) ban hanh vi ((cua tre) OR (cuu tre))*.