Perhaps you should try some spelling variations:
luat tuc » luat thue
va trinh » van trinh, va tinh, lap trinh
so sach » so sanh, bo sach, co sach
nang ho » nang hoc, nang co, tang ho
doi cua » dai cua, hoi cua
lam tuc » lam thuoc, lam truoc, nam thuc
di cua » dai cua, de cua, do cua
y nang » ky nang, ly nang, v nang
ho hai » hoc hai, pho hai, cho hai

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 nang ho hai. lieu va ((lam tuc) or (luat tuc)) va trinh ((di cua) OR (doi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ho hai. lieu va ((lam tuc) OR (luat tuc)) va trinh ((di cua) OR (doi cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang ho hai. lieu va ((lam tuc) or (luat tuc)) va trinh ((di cua) OR (doi cua)) te".
• Adding a wildcard symbol may retrieve word variants: so sach y nang ho hai. lieu va ((lam tuc) or (luat tuc)) va trinh ((di cua) OR (doi cua)) te*.