Perhaps you should try some spelling variations:
tinh lai » tinh lao, tinh hai, minh lai
dua tren » dung tren
te sach » toc sach
ty nang » ty xang, ty hang, ly nang
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam

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 ((ty nang) OR (ky nang)) ma hoa. hieu ve cam duc va tinh lai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ky nang)) ma hoa. hieu ve cam duc va tinh lai ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) OR (ky nang)) ma hoa. hieu ve cam duc va tinh lai ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) OR (ky nang)) ma hoa. hieu ve cam duc va tinh lai ((dua tren) or (cuu tre))*.