Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
va thanh » ban thanh, va tinh, le thanh
te sach » toc sach
cu tren » tu tren, dua tren
cam tuc » cam xuc, cam tu, dam thuc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
hai cu » hai cua, hai chu, hai cuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. hieu va ((cam tuc) OR (nam thuc)) ((va thanh) or (gia thanh)) hai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu va ((cam tuc) OR (nam thuc)) ((va thanh) OR (gia thanh)) hai cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu va ((cam tuc) OR (nam thuc)) ((va thanh) or (gia thanh)) hai cu tren".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu va ((cam tuc) OR (nam thuc)) ((va thanh) or (gia thanh)) hai cu tren*.