Perhaps you should try some spelling variations:
trinh dien » tinh dien, trinh tin
luat tuc » luat thue
trinh di » trinh do, trinh dinh, trinh tai
so sach » so sanh, bo sach, co sach
tang ho » tang cho, tung ho, tang ha
lam tuc » lam thuoc, lam truoc, nam thuc
y tang » ky tang, 6 tang, 7 tang
ho hai » hoc hai, pho hai, cho hai
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: so sach y tang ho hai. lieu va ((lam tuc) or (luat tuc)) va ((trinh di) OR (trinh dien)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y tang ho hai. lieu va ((lam tuc) OR (luat tuc)) va ((trinh di) OR (trinh dien)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y tang ho hai. lieu va ((lam tuc) or (luat tuc)) va ((trinh di) OR (trinh dien)) cua te".
• Adding a wildcard symbol may retrieve word variants: so sach y tang ho hai. lieu va ((lam tuc) or (luat tuc)) va ((trinh di) OR (trinh dien)) cua te*.