Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
hoc hanh » hoc nhanh, hoc anh, thuc hanh
dong luc » nang luc
tu sach » thu sach, su sach, te sach
cuu mon » cuu mo, cuu mot, cuu cong
vo pham » vi pham, v pham, toi pham
luc va » duc va, tuc va, loc va
va hoa » van hoa, va hoc, ma hoa
hoa vo » hoa co

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 hoc tap, nghien cuu mon ((hoc hanh) OR (hoc thanh)) dong luc va hoa vo pham van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu mon ((hoc hanh) OR (hoc thanh)) dong luc va hoa vo pham van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu mon ((hoc hanh) OR (hoc thanh)) dong luc va hoa vo pham van*.