Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
nang tao » nang cao, sang tao, nang tai
su sach » so sach, vu sach
tao hai » tao dai, tao tai, tai hai
hieu ve » hieu va, hieu van
ve tham » va tham, ve cham, vi tham
thuc xa » thuc xay, tuc xa, thuc va
xa danh » va danh, dia danh, nam danh
y nang » ky nang, ly nang, v nang
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang tao hai. hieu ve tham thuc xa danh ((vi cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang tao hai. hieu ve tham thuc xa danh ((vi cua) OR (di cua)) te.
• Adding a wildcard symbol may retrieve word variants: su sach y nang tao hai. hieu ve tham thuc xa danh ((vi cua) or (di cua)) te*.